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Vulnerability Details :

CVE-2020-6817

Summary
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At-16 Feb, 2023 | 00:00
Updated At-19 Mar, 2025 | 15:21
Rejected At-
Credits

bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).

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:mozilla
Assigner Org ID:f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At:16 Feb, 2023 | 00:00
Updated At:19 Mar, 2025 | 15:21
Rejected At:
▼CVE Numbering Authority (CNA)

bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Mozilla Bleach
Versions
Affected
  • From unspecified before 3.1.4 (custom)
Problem Types
TypeCWE IDDescription
textN/Aregular expression denial-of-service (ReDoS) in BleachSanitizerFilter.sanitize_css gauntlet regular expression
Type: text
CWE ID: N/A
Description: regular expression denial-of-service (ReDoS) in BleachSanitizerFilter.sanitize_css gauntlet regular expression
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm
N/A
https://bugzilla.mozilla.org/show_bug.cgi?id=1623633
N/A
Hyperlink: https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm
Resource: N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1623633
Resource: N/A
▼Authorized Data Publishers (ADP)
1. 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
https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm
x_transferred
https://bugzilla.mozilla.org/show_bug.cgi?id=1623633
x_transferred
Hyperlink: https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm
Resource:
x_transferred
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1623633
Resource:
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-1333CWE-1333 Inefficient Regular Expression Complexity
Type: CWE
CWE ID: CWE-1333
Description: CWE-1333 Inefficient Regular Expression Complexity
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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@mozilla.org
Published At:16 Feb, 2023 | 22:15
Updated At:19 Mar, 2025 | 16:15

bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).

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
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Primary
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
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

Mozilla Corporation
mozilla
>>bleach>>Versions before 3.1.4(exclusive)
cpe:2.3:a:mozilla:bleach:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-1333Primarynvd@nist.gov
CWE-1333Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-1333
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-1333
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1623633security@mozilla.org
Exploit
Issue Tracking
https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmmsecurity@mozilla.org
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1623633af854a3a-2127-422b-91ae-364da2661108
Exploit
Issue Tracking
https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmmaf854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1623633
Source: security@mozilla.org
Resource:
Exploit
Issue Tracking
Hyperlink: https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1623633
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Exploit
Issue Tracking
Hyperlink: https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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CWE ID-CWE-400
Uncontrolled Resource Consumption
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2020-26304
Matching Score-4
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ShareView Details
Matching Score-4
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CVSS Score-8.7||HIGH
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||
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
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Vendor-foundationfoundationfoundation
Product-foundationfoundation-sitesfoundation-sites
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2020-26311
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
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CVSS Score-8.7||HIGH
EPSS-0.26% / 49.23%
||
7 Day CHG+0.04%
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KEV Action Due Date-Not Available
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Vendor-useragent_project3rd-Edenuseragent_project
Product-useragentuseragentuseragent
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-39663
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.21% / 43.61%
||
7 Day CHG~0.00%
Published-29 Aug, 2023 | 00:00
Updated-02 Oct, 2024 | 13:23
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.

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Vendor-mathjaxn/a
Product-mathjaxn/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-39619
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.17% / 38.31%
||
7 Day CHG~0.00%
Published-24 Oct, 2023 | 00:00
Updated-11 Sep, 2024 | 18:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

ReDos in NPMJS Node Email Check v.1.0.4 allows an attacker to cause a denial of service via a crafted string to the scpSyntax component.

Action-Not Available
Vendor-teomantuncern/a
Product-node_email_checkn/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2025-33090
Matching Score-4
Assigner-IBM Corporation
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Matching Score-4
Assigner-IBM Corporation
CVSS Score-7.5||HIGH
EPSS-0.12% / 32.52%
||
7 Day CHG+0.03%
Published-18 Aug, 2025 | 14:01
Updated-21 Aug, 2025 | 19:25
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
IBM Concert Software denial of service

IBM Concert Software 1.0.0 through 1.1.0 could allow a remote attacker to cause a denial of service using a specially crafted regular expression that would cause excessive resource consumption.

Action-Not Available
Vendor-IBM Corporation
Product-concertConcert Software
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2025-3262
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
ShareView Details
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
CVSS Score-5.3||MEDIUM
EPSS-0.07% / 22.70%
||
7 Day CHG~0.00%
Published-07 Jul, 2025 | 09:54
Updated-02 Aug, 2025 | 01:20
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Regular Expression Denial of Service (ReDoS) in huggingface/transformers

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the huggingface/transformers repository, specifically in version 4.49.0. The vulnerability is due to inefficient regular expression complexity in the `SETTING_RE` variable within the `transformers/commands/chat.py` file. The regex contains repetition groups and non-optimized quantifiers, leading to exponential backtracking when processing 'almost matching' payloads. This can degrade application performance and potentially result in a denial-of-service (DoS) when handling specially crafted input strings. The issue is fixed in version 4.51.0.

Action-Not Available
Vendor-huggingfacehuggingface
Product-transformershuggingface/transformers
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-31606
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.83% / 73.67%
||
7 Day CHG~0.00%
Published-06 Jun, 2023 | 00:00
Updated-02 Aug, 2024 | 14:53
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A Regular Expression Denial of Service (ReDoS) issue was discovered in the sanitize_html function of redcloth gem v4.0.0. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted payload.

Action-Not Available
Vendor-promptworksn/a
Product-redclothn/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-3994
Matching Score-4
Assigner-GitLab Inc.
ShareView Details
Matching Score-4
Assigner-GitLab Inc.
CVSS Score-7.5||HIGH
EPSS-0.35% / 56.89%
||
7 Day CHG~0.00%
Published-02 Aug, 2023 | 00:06
Updated-22 May, 2025 | 04:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Inefficient Regular Expression Complexity in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 9.3 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use ProjectReferenceFilter to the preview_markdown endpoint.

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-40599
Matching Score-4
Assigner-JPCERT/CC
ShareView Details
Matching Score-4
Assigner-JPCERT/CC
CVSS Score-7.5||HIGH
EPSS-0.54% / 66.66%
||
7 Day CHG~0.00%
Published-25 Aug, 2023 | 02:18
Updated-02 Oct, 2024 | 17:42
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Regular expression Denial-of-Service (ReDoS) exists in multiple add-ons for Mailform Pro CGI 4.3.1.3 and earlier, which allows a remote unauthenticated attacker to cause a denial-of-service condition. Affected add-ons are as follows: call/call.js, prefcodeadv/search.cgi, estimate/estimate.js, search/search.js, suggest/suggest.js, and coupon/coupon.js.

Action-Not Available
Vendor-synck_graphicaSYNCK GRAPHICA
Product-mailform_pro_cgiMailform Pro CGI
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-39174
Matching Score-4
Assigner-JetBrains s.r.o.
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Matching Score-4
Assigner-JetBrains s.r.o.
CVSS Score-4.3||MEDIUM
EPSS-0.00% / 0.03%
||
7 Day CHG~0.00%
Published-25 Jul, 2023 | 14:45
Updated-15 Oct, 2024 | 18:58
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In JetBrains TeamCity before 2023.05.2 a ReDoS attack was possible via integration with issue trackers

Action-Not Available
Vendor-JetBrains s.r.o.
Product-teamcityTeamCity
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2019-25102
Matching Score-4
Assigner-VulDB
ShareView Details
Matching Score-4
Assigner-VulDB
CVSS Score-4.3||MEDIUM
EPSS-0.08% / 24.32%
||
7 Day CHG~0.00%
Published-12 Feb, 2023 | 13:31
Updated-05 Aug, 2024 | 03:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
simple-markdown simple-markdown.js redos

A vulnerability, which was classified as problematic, was found in simple-markdown 0.6.0. Affected is an unknown function of the file simple-markdown.js. The manipulation with the input <<<<<<<<<<:/:/:/:/:/:/:/:/:/:/ leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.1 is able to address this issue. The patch is identified as 015a719bf5cdc561feea05500ecb3274ef609cd2. It is recommended to upgrade the affected component. VDB-220638 is the identifier assigned to this vulnerability.

Action-Not Available
Vendor-khanacademyn/a
Product-simple-markdownsimple-markdown
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2019-25103
Matching Score-4
Assigner-VulDB
ShareView Details
Matching Score-4
Assigner-VulDB
CVSS Score-4.3||MEDIUM
EPSS-0.04% / 12.18%
||
7 Day CHG~0.00%
Published-12 Feb, 2023 | 14:31
Updated-05 Aug, 2024 | 03:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
simple-markdown simple-markdown.js redos

A vulnerability has been found in simple-markdown 0.5.1 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file simple-markdown.js. The manipulation leads to inefficient regular expression complexity. The attack can be launched remotely. Upgrading to version 0.5.2 is able to address this issue. The patch is named 89797fef9abb4cab2fb76a335968266a92588816. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-220639.

Action-Not Available
Vendor-khanacademyn/a
Product-simple-markdownsimple-markdown
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-36053
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-4.08% / 88.09%
||
7 Day CHG~0.00%
Published-03 Jul, 2023 | 00:00
Updated-02 Aug, 2024 | 16:37
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In Django 3.2 before 3.2.20, 4 before 4.1.10, and 4.2 before 4.2.3, EmailValidator and URLValidator are subject to a potential ReDoS (regular expression denial of service) attack via a very large number of domain name labels of emails and URLs.

Action-Not Available
Vendor-n/aDjangoFedora ProjectDebian GNU/Linux
Product-djangodebian_linuxfedoran/adebian_linuxdjangofedora
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2025-25283
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-7.5||HIGH
EPSS-0.11% / 30.46%
||
7 Day CHG~0.00%
Published-12 Feb, 2025 | 18:21
Updated-12 Feb, 2025 | 19:25
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
parse-duraton vulnerable to Regex Denial of Service that results in event loop delay and out of memory

parse-duraton is software that allows users to convert a human readable duration to milliseconds. Versions prior to 2.1.3 are vulnerable to an event loop delay due to the CPU-bound operation of resolving the provided string, from a 0.5ms and up to ~50ms per one operation, with a varying size from 0.01 MB and up to 4.3 MB respectively, and an out of memory that would crash a running Node.js application due to a string size of roughly 10 MB that utilizes unicode characters. Version 2.1.3 contains a patch.

Action-Not Available
Vendor-jkroso
Product-parse-duration
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-3424
Matching Score-4
Assigner-GitLab Inc.
ShareView Details
Matching Score-4
Assigner-GitLab Inc.
CVSS Score-7.5||HIGH
EPSS-0.60% / 68.61%
||
7 Day CHG~0.00%
Published-13 Jul, 2023 | 02:08
Updated-30 Oct, 2024 | 19:29
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Inefficient Regular Expression Complexity in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.3 before 15.11.10, all versions starting from 16.0 before 16.0.6, all versions starting from 16.1 before 16.1.1. A Regular Expression Denial of Service was possible via sending crafted payloads to the preview_markdown endpoint.

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-29169
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-7.5||HIGH
EPSS-0.62% / 69.03%
||
7 Day CHG~0.00%
Published-01 Jun, 2022 | 22:20
Updated-23 Apr, 2025 | 18:20
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
ReDoS on endpoint html5client/useragent in BigBlueButton

BigBlueButton is an open source web conferencing system. Versions starting with 2.2 and prior to 2.3.19, 2.4.7, and 2.5.0-beta.2 are vulnerable to regular expression denial of service (ReDoS) attacks. By using specific a RegularExpression, an attacker can cause denial of service for the bbb-html5 service. The useragent library performs checking of device by parsing the input of User-Agent header and lets it go through lookupUserAgent() (alias of useragent.lookup() ). This function handles input by regexing and attackers can abuse that by providing some ReDos payload using `SmartWatch`. The maintainers removed `htmlclient/useragent` from versions 2.3.19, 2.4.7, and 2.5.0-beta.2. As a workaround, disable NginX forwarding the requests to the handler according to the directions in the GitHub Security Advisory.

Action-Not Available
Vendor-bigbluebuttonbigbluebutton
Product-bigbluebuttonbigbluebutton
CWE ID-CWE-20
Improper Input Validation
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-3364
Matching Score-4
Assigner-GitLab Inc.
ShareView Details
Matching Score-4
Assigner-GitLab Inc.
CVSS Score-7.5||HIGH
EPSS-6.04% / 90.36%
||
7 Day CHG~0.00%
Published-01 Aug, 2023 | 23:36
Updated-22 May, 2025 | 04:05
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Inefficient Regular Expression Complexity in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.14 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use AutolinkFilter to the preview_markdown endpoint.

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-33289
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.30% / 53.06%
||
7 Day CHG~0.00%
Published-21 Jun, 2023 | 00:00
Updated-08 Mar, 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

The urlnorm crate through 0.1.4 for Rust allows Regular Expression Denial of Service (ReDos) via a crafted URL to lib.rs. NOTE: the Supplier disputes this, taking the position that "Slow printing of URLs is not a CVE."

Action-Not Available
Vendor-urlnorm_projectn/a
Product-urlnormn/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2025-2099
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
ShareView Details
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
CVSS Score-5.3||MEDIUM
EPSS-0.08% / 23.42%
||
7 Day CHG~0.00%
Published-19 May, 2025 | 11:22
Updated-21 May, 2025 | 17:43
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Regular Expression Denial of Service (ReDoS) in huggingface/transformers

A vulnerability in the `preprocess_string()` function of the `transformers.testing_utils` module in huggingface/transformers version v4.48.3 allows for a Regular Expression Denial of Service (ReDoS) attack. The regular expression used to process code blocks in docstrings contains nested quantifiers, leading to exponential backtracking when processing input with a large number of newline characters. An attacker can exploit this by providing a specially crafted payload, causing high CPU usage and potential application downtime, effectively resulting in a Denial of Service (DoS) scenario.

Action-Not Available
Vendor-huggingfacehuggingface
Product-transformershuggingface/transformers
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-34104
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-7.5||HIGH
EPSS-0.20% / 41.75%
||
7 Day CHG-0.08%
Published-06 Jun, 2023 | 17:35
Updated-02 Aug, 2024 | 16:01
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Regex Injection via Doctype Entities

fast-xml-parser is an open source, pure javascript xml parser. fast-xml-parser allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for denial of service (DoS) attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time. This problem has been resolved in v4.2.4. Users are advised to upgrade. Users unable to upgrade should avoid using DOCTYPE parsing by setting the `processEntities: false` option.

Action-Not Available
Vendor-fast-xml-parser_projectNaturalIntelligence
Product-fast-xml-parserfast-xml-parser
CWE ID-CWE-400
Uncontrolled Resource Consumption
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-32758
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.16% / 36.91%
||
7 Day CHG~0.00%
Published-15 May, 2023 | 00:00
Updated-23 Jan, 2025 | 20:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

giturlparse (aka git-url-parse) through 1.2.2, as used in Semgrep 1.5.2 through 1.24.1, is vulnerable to ReDoS (Regular Expression Denial of Service) if parsing untrusted URLs. This might be relevant if Semgrep is analyzing an untrusted package (for example, to check whether it accesses any Git repository at an http:// URL), and that package's author placed a ReDoS attack payload in a URL used by the package.

Action-Not Available
Vendor-semgrepcoalan/a
Product-semgrepgit-url-parsen/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-29158
Matching Score-4
Assigner-Apache Software Foundation
ShareView Details
Matching Score-4
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.37% / 58.24%
||
7 Day CHG~0.00%
Published-02 Sep, 2022 | 07:10
Updated-03 Aug, 2024 | 06:10
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Regular Expression Denial of Service (ReDoS) vulnerability in Apache OFBiz

Apache OFBiz up to version 18.12.05 is vulnerable to Regular Expression Denial of Service (ReDoS) in the way it handles URLs provided by external, unauthenticated users. Upgrade to 18.12.06 or apply patches at https://issues.apache.org/jira/browse/OFBIZ-12599

Action-Not Available
Vendor-The Apache Software Foundation
Product-ofbizApache OFBiz
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-30858
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-5.3||MEDIUM
EPSS-0.13% / 32.59%
||
7 Day CHG~0.00%
Published-28 Apr, 2023 | 20:49
Updated-30 Jan, 2025 | 18:44
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Denosaurs emoji has ReDoS vulnerability in `replace` function

The Denosaurs emoji package provides emojis for dinosaurs. Starting in version 0.1.0 and prior to version 0.3.0, the reTrimSpace regex has 2nd degree polynomial inefficiency, leading to a delayed response given a big payload. The issue has been patched in 0.3.0. As a workaround, avoid using the `replace`, `unemojify`, or `strip` functions.

Action-Not Available
Vendor-denosaursdenosaurs
Product-emojiemoji
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2019-12041
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.40% / 60.07%
||
7 Day CHG~0.00%
Published-13 May, 2019 | 12:07
Updated-04 Aug, 2024 | 23:10
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

lib/common/html_re.js in remarkable 1.7.1 allows Regular Expression Denial of Service (ReDoS) via a CDATA section.

Action-Not Available
Vendor-remarkable_projectn/a
Product-remarkablen/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2024-8998
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
ShareView Details
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
CVSS Score-7.5||HIGH
EPSS-0.11% / 30.02%
||
7 Day CHG+0.02%
Published-20 Mar, 2025 | 10:11
Updated-04 Apr, 2025 | 09:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Regular Expression Denial of Service (ReDoS) in lunary-ai/lunary

A Regular Expression Denial of Service (ReDoS) vulnerability exists in lunary-ai/lunary version git f07a845. The server uses the regex /{.*?}/ to match user-controlled strings. In the default JavaScript regex engine, this regex can take polynomial time to match certain crafted user inputs. As a result, an attacker can cause the server to hang for an arbitrary amount of time by submitting a specially crafted payload. This issue is fixed in version 1.4.26.

Action-Not Available
Vendor-Lunary LLC
Product-lunarylunary-ai/lunary
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2024-7592
Matching Score-4
Assigner-Python Software Foundation
ShareView Details
Matching Score-4
Assigner-Python Software Foundation
CVSS Score-7.5||HIGH
EPSS-0.47% / 63.51%
||
7 Day CHG~0.00%
Published-19 Aug, 2024 | 19:06
Updated-05 Feb, 2025 | 21:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Quadratic complexity parsing cookies with backslashes

There is a LOW severity vulnerability affecting CPython, specifically the 'http.cookies' standard library module. When parsing cookies that contained backslashes for quoted characters in the cookie value, the parser would use an algorithm with quadratic complexity, resulting in excess CPU resources being used while parsing the value.

Action-Not Available
Vendor-Python Software Foundation
Product-pythonCPythoncpython
CWE ID-CWE-400
Uncontrolled Resource Consumption
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2024-5552
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
ShareView Details
Matching Score-4
Assigner-Protect AI (formerly huntr.dev)
CVSS Score-7.5||HIGH
EPSS-0.25% / 47.93%
||
7 Day CHG~0.00%
Published-06 Jun, 2024 | 18:09
Updated-23 Sep, 2024 | 22:31
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
ReDoS in kubeflow/kubeflow

kubeflow/kubeflow is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to inefficient regular expression complexity in its email validation mechanism. An attacker can remotely exploit this vulnerability without authentication by providing specially crafted input that causes the application to consume an excessive amount of CPU resources. This vulnerability affects the latest version of kubeflow/kubeflow, specifically within the centraldashboard-angular backend component. The impact of exploiting this vulnerability includes resource exhaustion, and service disruption.

Action-Not Available
Vendor-kubeflowkubeflowkubeflow
Product-kubeflowkubeflow/kubeflowkubeflow
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2023-30608
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-5.5||MEDIUM
EPSS-0.58% / 67.89%
||
7 Day CHG~0.00%
Published-18 Apr, 2023 | 21:32
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
Parser contains an inefficient regular expression in sqlparse

sqlparse is a non-validating SQL parser module for Python. In affected versions the SQL parser contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service). This issue was introduced by commit `e75e358`. The vulnerability may lead to Denial of Service (DoS). This issues has been fixed in sqlparse 0.4.4 by commit `c457abd5f`. Users are advised to upgrade. There are no known workarounds for this issue.

Action-Not Available
Vendor-sqlparse_projectandialbrechtDebian GNU/Linux
Product-debian_linuxsqlparsesqlparse
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2024-48938
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.52% / 65.83%
||
7 Day CHG~0.00%
Published-11 Oct, 2024 | 00:00
Updated-14 Mar, 2025 | 14:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Znuny before LTS 6.5.1 through 6.5.10 and 7.0.1 through 7.0.16 allows DoS/ReDos via email. Parsing the content of emails where HTML code is copied from Microsoft Word could lead to high CPU usage and block the parsing process.

Action-Not Available
Vendor-znunyn/a
Product-znunyn/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-25901
Matching Score-4
Assigner-Snyk
ShareView Details
Matching Score-4
Assigner-Snyk
CVSS Score-5.3||MEDIUM
EPSS-0.03% / 8.36%
||
7 Day CHG-0.00%
Published-18 Jan, 2023 | 05:00
Updated-03 Apr, 2025 | 19:33
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Versions of the package cookiejar before 2.1.4 are vulnerable to Regular Expression Denial of Service (ReDoS) via the Cookie.parse function, which uses an insecure regular expression.

Action-Not Available
Vendor-cookiejar_projectn/a
Product-cookiejarorg.webjars.npm:cookiejarcookiejar
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2024-46242
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.07% / 21.64%
||
7 Day CHG~0.00%
Published-07 Jan, 2025 | 00:00
Updated-07 Jan, 2025 | 21:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An issue in the validate_email function in CTFd/utils/validators/__init__.py of CTFd 3.7.3 allows attackers to cause a Regular expression Denial of Service (ReDoS) via supplying a crafted string as e-mail address during registration.

Action-Not Available
Vendor-n/a
Product-n/a
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-25918
Matching Score-4
Assigner-Snyk
ShareView Details
Matching Score-4
Assigner-Snyk
CVSS Score-5.3||MEDIUM
EPSS-0.27% / 50.00%
||
7 Day CHG+0.02%
Published-27 Oct, 2022 | 05:05
Updated-05 May, 2025 | 19:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Regular Expression Denial of Service (ReDoS)

The package shescape from 1.5.10 and before 1.6.1 are vulnerable to Regular Expression Denial of Service (ReDoS) via the escape function in index.js, due to the usage of insecure regex in the escapeArgBash function.

Action-Not Available
Vendor-shescape_projectn/a
Product-shescapeshescape
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-25927
Matching Score-4
Assigner-Snyk
ShareView Details
Matching Score-4
Assigner-Snyk
CVSS Score-5.3||MEDIUM
EPSS-1.37% / 79.46%
||
7 Day CHG~0.00%
Published-25 Jan, 2023 | 05:00
Updated-01 Apr, 2025 | 19:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Versions of the package ua-parser-js from 0.7.30 and before 0.7.33, from 0.8.1 and before 1.0.33 are vulnerable to Regular Expression Denial of Service (ReDoS) via the trim() function.

Action-Not Available
Vendor-ua-parser-js_projectn/a
Product-ua-parser-jsua-parser-js
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
CVE-2022-26650
Matching Score-4
Assigner-Apache Software Foundation
ShareView Details
Matching Score-4
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-1.26% / 78.57%
||
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-2024-45296
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-7.5||HIGH
EPSS-0.17% / 38.32%
||
7 Day CHG~0.00%
Published-09 Sep, 2024 | 19:07
Updated-24 Jan, 2025 | 20:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
path-to-regexp outputs backtracking regular expressions

path-to-regexp turns path strings into a regular expressions. In certain cases, path-to-regexp will output a regular expression that can be exploited to cause poor performance. Because JavaScript is single threaded and regex matching runs on the main thread, poor performance will block the event loop and lead to a DoS. The bad regular expression is generated any time you have two parameters within a single segment, separated by something that is not a period (.). For users of 0.1, upgrade to 0.1.10. All other users should upgrade to 8.0.0.

Action-Not Available
Vendor-pillarjspillarjs
Product-path-to-regexppath-to-regexp
CWE ID-CWE-1333
Inefficient Regular Expression Complexity
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