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Vulnerability Details :

CVE-2026-34355

Summary
Assigner-apache
Assigner Org ID-f0158376-9dc2-43b6-827c-5f631a4d8d09
Published At-08 Jun, 2026 | 15:20
Updated At-08 Jun, 2026 | 22:32
Rejected At-
Credits

Apache HTTP Server: mod_proxy_html buffer overflow

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:apache
Assigner Org ID:f0158376-9dc2-43b6-827c-5f631a4d8d09
Published At:08 Jun, 2026 | 15:20
Updated At:08 Jun, 2026 | 22:32
Rejected At:
▼CVE Numbering Authority (CNA)
Apache HTTP Server: mod_proxy_html buffer overflow

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.

Affected Products
Vendor
The Apache Software FoundationApache Software Foundation
Product
Apache HTTP Server
Default Status
unaffected
Versions
Affected
  • From 2.4.0 through 2.4.67 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-122CWE-122 Heap-based Buffer Overflow
Type: CWE
CWE ID: CWE-122
Description: CWE-122 Heap-based Buffer Overflow
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Textual description of severity
text:
moderate
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Elhanan Haenel
finder
Junhui Lee
Timeline
EventDate
Report received2026-03-21 09:59:00
fixed in 2.4.x by r19349772026-06-04 12:00:00
2.4.68 released2026-06-08 12:00:00
Event: Report received
Date: 2026-03-21 09:59:00
Event: fixed in 2.4.x by r1934977
Date: 2026-06-04 12:00:00
Event: 2.4.68 released
Date: 2026-06-08 12:00:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://httpd.apache.org/security/vulnerabilities_24.html
vendor-advisory
Hyperlink: https://httpd.apache.org/security/vulnerabilities_24.html
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
http://www.openwall.com/lists/oss-security/2026/06/08/6
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/06/08/6
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@apache.org
Published At:08 Jun, 2026 | 16:16
Updated At:09 Jun, 2026 | 16:20

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches

The Apache Software Foundation
apache
>>http_server>>Versions from 2.4.0(inclusive) to 2.4.68(exclusive)
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-122Secondarysecurity@apache.org
CWE ID: CWE-122
Type: Secondary
Source: security@apache.org
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://httpd.apache.org/security/vulnerabilities_24.htmlsecurity@apache.org
Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/08/6af854a3a-2127-422b-91ae-364da2661108
Mailing List
Hyperlink: https://httpd.apache.org/security/vulnerabilities_24.html
Source: security@apache.org
Resource:
Vendor Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2026/06/08/6
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List

Change History

0
Information is not available yet

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Matching Score-8
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Matching Score-8
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Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
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7 Day CHG~0.00%
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Matching Score-8
Assigner-Apache Software Foundation
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7 Day CHG~0.00%
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Rejected-Not Available
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Action-Not Available
Vendor-The Apache Software Foundation
Product-tapestryApache Tapestry
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-30522
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-10.19% / 93.29%
||
7 Day CHG~0.00%
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Updated-03 Aug, 2024 | 06:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
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Vendor-NetApp, Inc.The Apache Software FoundationFedora Project
Product-http_serverclustered_data_ontapfedoraApache HTTP Server
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Matching Score-8
Assigner-GitHub, Inc.
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Matching Score-8
Assigner-GitHub, Inc.
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Published-22 Mar, 2021 | 23:45
Updated-23 May, 2025 | 17:42
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Known To Be Used In Ransomware Campaigns?-Not Available
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Action-Not Available
Vendor-xstreamx-streamNetApp, Inc.Oracle CorporationFedora ProjectThe Apache Software FoundationDebian GNU/Linux
Product-xstreamcommunications_unified_inventory_managementcommunications_billing_and_revenue_management_elastic_charging_enginewebcenter_portaloncommand_insightmysql_serverbanking_virtual_account_managementjmetercommunications_policy_managementactivemqretail_xstore_point_of_servicedebian_linuxbanking_enterprise_default_managementfedorabanking_platformbusiness_activity_monitoringxstream
CWE ID-CWE-400
Uncontrolled Resource Consumption
CWE ID-CWE-502
Deserialization of Untrusted Data
CVE-2022-29885
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-55.53% / 98.12%
||
7 Day CHG~0.00%
Published-12 May, 2022 | 00:00
Updated-03 Aug, 2024 | 06:33
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
EncryptInterceptor does not provide complete protection on insecure networks

The documentation of Apache Tomcat 10.1.0-M1 to 10.1.0-M14, 10.0.0-M1 to 10.0.20, 9.0.13 to 9.0.62 and 8.5.38 to 8.5.78 for the EncryptInterceptor incorrectly stated it enabled Tomcat clustering to run over an untrusted network. This was not correct. While the EncryptInterceptor does provide confidentiality and integrity protection, it does not protect against all risks associated with running over any untrusted network, particularly DoS risks.

Action-Not Available
Vendor-The Apache Software FoundationDebian GNU/LinuxOracle Corporation
Product-hospitality_cruise_shipboard_property_management_systemdebian_linuxtomcatApache Tomcat
CWE ID-CWE-400
Uncontrolled Resource Consumption
CVE-2022-28220
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-9.18% / 92.87%
||
7 Day CHG~0.00%
Published-08 Sep, 2022 | 07:40
Updated-03 Aug, 2024 | 05:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
STARTTLS command injection in Apache JAMES

Apache James prior to release 3.6.3 and 3.7.1 is vulnerable to a buffering attack relying on the use of the STARTTLS command. Fix of CVE-2021-38542, which solved similar problem fron Apache James 3.6.1, is subject to a parser differential and do not take into account concurrent requests.

Action-Not Available
Vendor-The Apache Software Foundation
Product-jamesApache James
CWE ID-CWE-77
Improper Neutralization of Special Elements used in a Command ('Command Injection')
CVE-2019-0210
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.19% / 79.26%
||
7 Day CHG~0.00%
Published-28 Oct, 2019 | 22:22
Updated-04 Aug, 2024 | 17:44
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In Apache Thrift 0.9.3 to 0.12.0, a server implemented in Go using TJSONProtocol or TSimpleJSONProtocol may panic when feed with invalid input data.

Action-Not Available
Vendor-Red Hat, Inc.The Apache Software FoundationOracle Corporation
Product-thriftjboss_enterprise_application_platformcommunications_cloud_native_core_network_slice_selection_functionenterprise_linux_serverApache Thrift
CWE ID-CWE-125
Out-of-bounds Read
CVE-2022-26650
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.09% / 78.31%
||
7 Day CHG~0.00%
Published-17 May, 2022 | 08:05
Updated-03 Aug, 2024 | 05:11
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache ShenYu (incubating) Regular expression denial of service

In Apache ShenYui, ShenYu-Bootstrap, RegexPredicateJudge.java uses Pattern.matches(conditionData.getParamValue(), realData) to make judgments, where both parameters are controllable by the user. This can cause an attacker pass in malicious regular expressions and characters causing a resource exhaustion. This issue affects Apache ShenYu (incubating) 2.4.0, 2.4.1 and 2.4.2 and is fixed in 2.4.3.

Action-Not Available
Vendor-The Apache Software Foundation
Product-shenyuApache ShenYu (incubating)
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-25598
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.13% / 78.70%
||
7 Day CHG~0.00%
Published-30 Mar, 2022 | 09:20
Updated-03 Aug, 2024 | 04:42
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache DolphinScheduler user registration is vulnerable to ReDoS attacks

Apache DolphinScheduler user registration is vulnerable to Regular express Denial of Service (ReDoS) attacks, Apache DolphinScheduler users should upgrade to version 2.0.5 or higher.

Action-Not Available
Vendor-The Apache Software Foundation
Product-dolphinschedulerApache DolphinScheduler
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2026-39304
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.06% / 17.87%
||
7 Day CHG~0.00%
Published-10 Apr, 2026 | 10:54
Updated-13 Apr, 2026 | 15:02
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Incorrect handling of TLSv1.3 KeyUpdate can be exploited to cause DoS via OOM

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ. ActiveMQ NIO SSL transports do not correctly handle TLSv1.3 handshake KeyUpdates triggered by clients. This makes it possible for a client to rapidly trigger updates which causes the broker to exhaust all its memory in the SSL engine leading to DoS. Note: TLS versions before TLSv1.3 (such as TLSv1.2) are broken but are not vulnerable to OOM. Previous TLS versions require a full handshake renegotiation which causes a connection to hang but not OOM. This is fixed as well. This issue affects Apache ActiveMQ Client: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

Action-Not Available
Vendor-The Apache Software Foundation
Product-Apache ActiveMQ AllApache ActiveMQApache ActiveMQ ClientApache ActiveMQ Broker
CWE ID-CWE-400
Uncontrolled Resource Consumption
CVE-2022-23974
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-3.23% / 87.36%
||
7 Day CHG~0.00%
Published-05 Apr, 2022 | 19:55
Updated-03 Aug, 2024 | 03:59
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Pinot segment push endpoint has a vulnerability in unprotected environments

In 0.9.3 or older versions of Apache Pinot segment upload path allowed segment directories to be imported into pinot tables. In pinot installations that allow open access to the controller a specially crafted request can potentially be exploited to cause disruption in pinot service. Pinot release 0.10.0 fixes this. See https://docs.pinot.apache.org/basics/releases/0.10.0

Action-Not Available
Vendor-The Apache Software Foundation
Product-pinotApache Pinot
CWE ID-CWE-674
Uncontrolled Recursion
CVE-2022-24294
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-4.72% / 89.63%
||
7 Day CHG~0.00%
Published-24 Jul, 2022 | 17:45
Updated-03 Aug, 2024 | 04:07
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
ReDoS in Apache MXNet RTC Module

A regular expression used in Apache MXNet (incubating) is vulnerable to a potential denial-of-service by excessive resource consumption. The bug could be exploited when loading a model in Apache MXNet that has a specially crafted operator name that would cause the regular expression evaluation to use excessive resources to attempt a match. This issue affects Apache MXNet versions prior to 1.9.1.

Action-Not Available
Vendor-The Apache Software Foundation
Product-mxnetApache MXNet
CWE ID-CWE-400
Uncontrolled Resource Consumption
CVE-2022-24070
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.61% / 82.16%
||
7 Day CHG~0.00%
Published-12 Apr, 2022 | 17:50
Updated-03 Aug, 2024 | 03:59
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache Subversion mod_dav_svn is vulnerable to memory corruption

Subversion's mod_dav_svn is vulnerable to memory corruption. While looking up path-based authorization rules, mod_dav_svn servers may attempt to use memory which has already been freed. Affected Subversion mod_dav_svn servers 1.10.0 through 1.14.1 (inclusive). Servers that do not use mod_dav_svn are not affected.

Action-Not Available
Vendor-The Apache Software FoundationApple Inc.Fedora ProjectDebian GNU/Linux
Product-subversiondebian_linuxmacosfedoraApache Subversion
CWE ID-CWE-416
Use After Free
CVE-2022-23913
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.89% / 76.02%
||
7 Day CHG-1.51%
Published-04 Feb, 2022 | 22:33
Updated-03 Aug, 2024 | 03:59
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache ActiveMQ Artemis DoS

In Apache ActiveMQ Artemis prior to 2.20.0 or 2.19.1, an attacker could partially disrupt availability (DoS) through uncontrolled resource consumption of memory.

Action-Not Available
Vendor-NetApp, Inc.The Apache Software Foundation
Product-active_iq_unified_manageractivemq_artemisoncommand_workflow_automationApache ActiveMQ Artemis
CWE ID-CWE-770
Allocation of Resources Without Limits or Throttling
CVE-2022-22719
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-29.85% / 96.75%
||
7 Day CHG~0.00%
Published-14 Mar, 2022 | 10:15
Updated-03 Aug, 2024 | 03:21
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
mod_lua Use of uninitialized value of in r:parsebody

A carefully crafted request body can cause a read to a random memory area which could cause the process to crash. This issue affects Apache HTTP Server 2.4.52 and earlier.

Action-Not Available
Vendor-The Apache Software FoundationApple Inc.Fedora ProjectDebian GNU/LinuxOracle Corporation
Product-http_serverdebian_linuxfedorazfs_storage_appliance_kitmac_os_xmacosApache HTTP Server
CWE ID-CWE-665
Improper Initialization
CVE-2010-3872
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-7.5||HIGH
EPSS-0.94% / 76.72%
||
7 Day CHG~0.00%
Published-20 Nov, 2010 | 20:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Httpd: mod_fcgid: stack-based buffer overflow in fcgid_header_bucket_read() in modules/fcgid/fcgid_bucket.c

A flaw was found in the mod_fcgid module of httpd. A malformed FastCGI response may result in a stack-based buffer overflow in the modules/fcgid/fcgid_bucket.c file in the fcgid_header_bucket_read() function, resulting in an application crash.

Action-Not Available
Vendor-n/aFedora ProjectThe Apache Software FoundationRed Hat, Inc.
Product-mod_fcgidmod_fcgidRed Hat Enterprise Linux 9Red Hat Enterprise Linux 8Red Hat Enterprise Linux 7Fedora
CWE ID-CWE-121
Stack-based Buffer Overflow
CVE-2020-9490
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-76.28% / 98.95%
||
7 Day CHG~0.00%
Published-07 Aug, 2020 | 15:24
Updated-04 Aug, 2024 | 10:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.

Action-Not Available
Vendor-n/aCanonical Ltd.The Apache Software FoundationRed Hat, Inc.openSUSEFedora ProjectDebian GNU/LinuxOracle Corporation
Product-ubuntu_linuxsoftware_collectionsenterprise_linux_server_update_services_for_sap_solutionsenterprise_linux_server_ausopenstackcommunications_session_route_managerenterprise_linuxopenstack_for_ibm_powerenterprise_linux_for_power_little_endiancommunications_session_report_managerhttp_serverdebian_linuxinstantis_enterprisetrackfedorazfs_storage_appliance_kitenterprise_linux_for_ibm_z_systemsenterprise_linux_eusenterprise_linux_for_power_little_endian_eusenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionshyperion_infrastructure_technologyenterprise_linux_server_tusenterprise_manager_ops_centerenterprise_linux_for_ibm_z_systems_euscommunications_element_managerleapApache HTTP Server
CWE ID-CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CVE-2020-9487
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.63% / 70.84%
||
7 Day CHG~0.00%
Published-01 Oct, 2020 | 19:53
Updated-04 Aug, 2024 | 10:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.

Action-Not Available
Vendor-n/aThe Apache Software Foundation
Product-nifiApache NiFi
CWE ID-CWE-306
Missing Authentication for Critical Function
CVE-2020-9494
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.98% / 83.94%
||
7 Day CHG-1.20%
Published-24 Jun, 2020 | 15:25
Updated-04 Aug, 2024 | 10:34
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.

Action-Not Available
Vendor-The Apache Software FoundationDebian GNU/Linux
Product-debian_linuxtraffic_serverApache Traffic Server
CWE ID-CWE-770
Allocation of Resources Without Limits or Throttling
CVE-2020-9481
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-5.23% / 90.17%
||
7 Day CHG~0.00%
Published-27 Apr, 2020 | 21:11
Updated-04 Aug, 2024 | 10:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Apache ATS 6.0.0 to 6.2.3, 7.0.0 to 7.1.9, and 8.0.0 to 8.0.6 is vulnerable to a HTTP/2 slow read attack.

Action-Not Available
Vendor-The Apache Software FoundationDebian GNU/Linux
Product-debian_linuxtraffic_serverATS
CWE ID-CWE-400
Uncontrolled Resource Consumption
CVE-2023-26464
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.12% / 31.30%
||
7 Day CHG~0.00%
Published-10 Mar, 2023 | 13:38
Updated-13 Feb, 2025 | 17:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache Log4j 1.x (EOL) allows DoS in Chainsaw and SocketAppender

** UNSUPPORTED WHEN ASSIGNED ** When using the Chainsaw or SocketAppender components with Log4j 1.x on JRE less than 1.7, an attacker that manages to cause a logging entry involving a specially-crafted (ie, deeply nested) hashmap or hashtable (depending on which logging component is in use) to be processed could exhaust the available memory in the virtual machine and achieve Denial of Service when the object is deserialized. This issue affects Apache Log4j before 2. Affected users are recommended to update to Log4j 2.x. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Action-Not Available
Vendor-The Apache Software Foundation
Product-log4jApache Log4jlog4j
CWE ID-CWE-502
Deserialization of Untrusted Data
CVE-2020-36230
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-3.55% / 87.95%
||
7 Day CHG~0.00%
Published-25 Jan, 2021 | 09:43
Updated-04 Aug, 2024 | 17:23
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A flaw was discovered in OpenLDAP before 2.4.57 leading in an assertion failure in slapd in the X.509 DN parsing in decode.c ber_next_element, resulting in denial of service.

Action-Not Available
Vendor-openldapn/aThe Apache Software FoundationApple Inc.Debian GNU/Linux
Product-debian_linuxbookkeepermac_os_xopenldapmacosn/a
CWE ID-CWE-617
Reachable Assertion
CVE-2009-2699
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-9.28% / 92.92%
||
7 Day CHG~0.00%
Published-13 Oct, 2009 | 10:00
Updated-23 Apr, 2026 | 00:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as used in the Apache HTTP Server before 2.2.14 and other products, does not properly handle errors, which allows remote attackers to cause a denial of service (daemon hang) via unspecified HTTP requests, related to the prefork and event MPMs.

Action-Not Available
Vendor-n/aThe Apache Software Foundation
Product-portable_runtimehttp_servern/a
CWE ID-CWE-667
Improper Locking
CVE-2009-1955
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-2.33% / 85.17%
||
7 Day CHG~0.00%
Published-06 Jun, 2009 | 18:00
Updated-23 Apr, 2026 | 00:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564.

Action-Not Available
Vendor-n/aCanonical Ltd.Apple Inc.Oracle CorporationSUSEThe Apache Software FoundationDebian GNU/LinuxFedora Project
Product-debian_linuxubuntu_linuxmac_os_xlinux_enterprise_serverapr-utilfedorahttp_servern/a
CWE ID-CWE-776
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CVE-2002-1850
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-2.21% / 84.77%
||
7 Day CHG~0.00%
Published-28 Jun, 2005 | 04:00
Updated-16 Apr, 2026 | 00:27
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.

Action-Not Available
Vendor-n/aThe Apache Software Foundation
Product-http_servern/a
CWE ID-CWE-667
Improper Locking
CVE-2021-35515
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.19% / 79.24%
||
7 Day CHG~0.00%
Published-13 Jul, 2021 | 07:15
Updated-04 Aug, 2024 | 00:40
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache Commons Compress 1.6 to 1.20 denial of service vulnerability

When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress' sevenz package.

Action-Not Available
Vendor-NetApp, Inc.The Apache Software FoundationOracle Corporation
Product-healthcare_data_repositorypeoplesoft_enterprise_peopletoolsprimavera_unifiercommunications_cloud_native_core_automated_test_suitecommunications_cloud_native_core_service_communication_proxybanking_digital_experiencecommunications_billing_and_revenue_managementoncommand_insightutilities_testing_acceleratorcommunications_messaging_serverfinancial_services_crime_and_compliance_management_studiocommunications_session_route_manageractive_iq_unified_managerfinancial_services_enterprise_case_managementbanking_party_managementbanking_trade_financecommunications_diameter_intelligence_hubbanking_enterprise_default_managementbanking_paymentscommunications_cloud_native_core_unified_data_repositoryflexcube_universal_bankingcommons_compressinsurance_policy_administrationcommerce_guided_searchbanking_treasury_managementbusiness_process_management_suiteApache Commons Compress
CWE ID-CWE-834
Excessive Iteration
CWE ID-CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
CVE-2020-17525
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-14.80% / 94.66%
||
7 Day CHG~0.00%
Published-17 Mar, 2021 | 09:20
Updated-13 Feb, 2025 | 16:27
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Remote unauthenticated denial-of-service in Subversion mod_authz_svn

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

Action-Not Available
Vendor-Debian GNU/LinuxThe Apache Software Foundation
Product-subversiondebian_linuxApache Subversion
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2024-50305
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.32% / 55.22%
||
7 Day CHG~0.00%
Published-14 Nov, 2024 | 09:54
Updated-04 Jun, 2025 | 16:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache Traffic Server: Valid Host field value can cause crashes

Valid Host header field can cause Apache Traffic Server to crash on some platforms. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.5. Users are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does not have the issue.

Action-Not Available
Vendor-apache_software_foundationThe Apache Software Foundation
Product-traffic_serverApache Traffic Serverapache_traffic_server
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE ID-CWE-20
Improper Input Validation
CVE-2006-20001
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.55% / 68.30%
||
7 Day CHG+0.08%
Published-17 Jan, 2023 | 19:07
Updated-13 Feb, 2025 | 17:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Apache HTTP Server: mod_dav out of bounds read, or write of zero byte

A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash. This issue affects Apache HTTP Server 2.4.54 and earlier.

Action-Not Available
Vendor-The Apache Software Foundation
Product-http_serverApache HTTP Server
CWE ID-CWE-787
Out-of-bounds Write
CVE-2020-13935
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-92.16% / 99.73%
||
7 Day CHG~0.00%
Published-14 Jul, 2020 | 15:00
Updated-04 Aug, 2024 | 12:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

Action-Not Available
Vendor-n/aDebian GNU/LinuxMcAfee, LLCNetApp, Inc.The Apache Software FoundationopenSUSEOracle CorporationCanonical Ltd.
Product-ubuntu_linuxepolicy_orchestratorsiebel_ui_frameworkcommunications_instant_messaging_serveragile_engineering_data_managementagile_plmcommerce_guided_searchcommunications_cloud_native_core_policymanaged_file_transferdebian_linuxblockchain_platformmysql_enterprise_monitorinstantis_enterprisetrackoncommand_system_managertomcatfmw_platformworkload_managerleapApache Tomcat
CWE ID-CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
CVE-2006-1547
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-7.5||HIGH
EPSS-22.19% / 95.93%
||
7 Day CHG~0.00%
Published-30 Mar, 2006 | 22:00
Updated-16 Apr, 2026 | 14:02
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Known KEV||Action Due Date - 2022-07-21||Apply updates per vendor instructions.

ActionForm in Apache Software Foundation (ASF) Struts before 1.2.9 with BeanUtils 1.7 allows remote attackers to cause a denial of service via a multipart/form-data encoded form with a parameter name that references the public getMultipartRequestHandler method, which provides further access to elements in the CommonsMultipartRequestHandler implementation and BeanUtils.

Action-Not Available
Vendor-n/aThe Apache Software Foundation
Product-strutscommons_beanutilsn/aStruts 1
CWE ID-CWE-749
Exposed Dangerous Method or Function
CVE-2020-13949
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.97% / 77.01%
||
7 Day CHG+0.23%
Published-12 Feb, 2021 | 19:39
Updated-04 Aug, 2024 | 12:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In Apache Thrift 0.9.3 to 0.13.0, malicious RPC clients could send short messages which would result in a large memory allocation, potentially leading to denial of service.

Action-Not Available
Vendor-n/aThe Apache Software FoundationOracle Corporation
Product-thriftcommunications_cloud_native_core_policycommunications_cloud_native_core_network_slice_selection_functionhiveApache Thrift
CWE ID-CWE-400
Uncontrolled Resource Consumption
CVE-2020-13934
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-23.38% / 96.08%
||
7 Day CHG~0.00%
Published-14 Jul, 2020 | 14:59
Updated-04 Aug, 2024 | 12:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.

Action-Not Available
Vendor-n/aCanonical Ltd.The Apache Software FoundationNetApp, Inc.openSUSEDebian GNU/LinuxOracle Corporation
Product-ubuntu_linuxdebian_linuxcommunications_instant_messaging_servermysql_enterprise_monitorinstantis_enterprisetracksiebel_ui_frameworkoncommand_system_managertomcatagile_engineering_data_managementagile_plmfmw_platformmanaged_file_transferworkload_managerleapApache Tomcat
CWE ID-CWE-401
Missing Release of Memory after Effective Lifetime
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2020-13950
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-17.58% / 95.24%
||
7 Day CHG+3.13%
Published-10 Jun, 2021 | 07:10
Updated-04 Aug, 2024 | 12:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
mod_proxy_http NULL pointer dereference

Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service

Action-Not Available
Vendor-The Apache Software FoundationFedora ProjectDebian GNU/LinuxOracle Corporation
Product-http_serverdebian_linuxinstantis_enterprisetrackfedorazfs_storage_appliance_kitenterprise_manager_ops_centerApache HTTP Server
CWE ID-CWE-476
NULL Pointer Dereference
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