Vulnerability details

CVE-2026-57915

Apache Software Foundation Apache KerbyRed Hat AMQ ClientsRed Hat streams for Apache Kafka 2

Apache Kerby: Kerberos Pre-Authentication Bypass

CVSS 3.1

7.3High

Official description

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.

CVSS scores

Score	Version	Source	Vector
7.3High	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`
7.3High	3.1	CVEProject cvelistV5 (CNA) (redhat-SADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`

Affected products

Vendor	Product	Versions	Source
Apache Software Foundation	Apache Kerby	v < 2.1.2	CVEProject cvelistV5 (CNA)
Red Hat	Red Hat AMQ Clients	All	CVEProject cvelistV5 (CNA)
Red Hat	streams for Apache Kafka 2	All	CVEProject cvelistV5 (CNA)

References and advisories

https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/26/8
https://access.redhat.com/security/cve/CVE-2026-57915 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2493407 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json x_sadp-csaf-vex

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Details

Published: 2026-06-26
Last updated: 2026-08-03
State: Published
Assigner (CNA): apache

Exploit prediction (EPSS)

0.52%

Probability of exploitation in 30 days

44.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-304
Missing Critical Step in Authentication
CWE-358
Improperly Implemented Security Check for Standard