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CVE Vulnerability Details :
CVE-2026-57915
PUBLISHED
More InfoOfficial Page
Assigner-apache
Assigner Org ID-f0158376-9dc2-43b6-827c-5f631a4d8d09
View Known Exploited Vulnerability (KEV) details
Published At-26 Jun, 2026 | 12:09
Updated At-30 Jun, 2026 | 03:16
Rejected At-
▼CVE Numbering Authority (CNA)
Apache Kerby: Kerberos Pre-Authentication Bypass

It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.

Affected Products
Vendor
The Apache Software FoundationApache Software Foundation
Product
Apache Kerby
Collection URL
https://repo.maven.apache.org/maven2
Package Name
org.apache.kerby:kerb-server
Default Status
unaffected
Versions
Affected
  • From 0 before 2.1.2 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-304CWE-304 Missing Critical Step in Authentication
Type: CWE
CWE ID: CWE-304
Description: CWE-304 Missing Critical Step in Authentication
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Textual description of severity
text:
important
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh
vendor-advisory
Hyperlink: https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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/2026/06/26/8
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/06/26/8
Resource: N/A
3. Apache Kerby: org.apache.kerby/kerb-server: Apache Kerby: Kerberos pre-authentication bypass via unrecognized PA-DATA

A flaw was found in Apache Kerby. An attacker can bypass the Kerberos pre-authentication check by sending a Pre-Authentication Data (PA-DATA) packet with an unrecognized or unsupported type. This vulnerability allows an attacker to circumvent the initial authentication step, potentially leading to unauthorized access or impersonation within a Kerberos-protected environment.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat AMQ Clients
CPEs
  • cpe:/a:redhat:amq_clients:2023
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat JBoss Enterprise Application Platform Expansion Pack
CPEs
  • cpe:/a:redhat:jbosseapxp
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
streams for Apache Kafka 2
CPEs
  • cpe:/a:redhat:amq_streams:2
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
streams for Apache Kafka 3
CPEs
  • cpe:/a:redhat:amq_streams:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Data Grid 8
CPEs
  • cpe:/a:redhat:jboss_data_grid:8
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Fuse 7
CPEs
  • cpe:/a:redhat:jboss_fuse:7
Default Status
unaffected
Problem Types
TypeCWE IDDescription
CWECWE-358Improperly Implemented Security Check for Standard
Type: CWE
CWE ID: CWE-358
Description: Improperly Implemented Security Check for Standard
Metrics
VersionBase scoreBase severityVector
3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Metrics Other Info
Red Hat severity rating
value:
Important
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Exploits
Credits
Timeline
EventDate
Reported to Red Hat.2026-06-26 13:00:52
Made public.2026-06-26 12:09:54
Event: Reported to Red Hat.
Date: 2026-06-26 13:00:52
Event: Made public.
Date: 2026-06-26 12:09:54
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-57915
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2493407
issue-tracking
x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json
x_sadp-csaf-vex
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-57915
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2493407
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json
Resource:
x_sadp-csaf-vex
Details not found