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Advisory severityHigh7.3Red Hat Linux

High [CVE-2026-57915] Kerberos pre-authentication bypass via unrecognized PA-DATA

This high-severity Red Hat Linux advisory covers CVE-2026-57915 affecting AMQ Clients 2026.Q3, streams for Apache Kafka 2.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-57915 Source published Source updated

VulniPulse record published Record updated

CVE-2026-57915
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

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.

This vulnerability allows an attacker to circumvent the initial authentication step, potentially leading to unauthorized access or impersonation within a Kerberos-protected environment.

This is an Important flaw in Apache Kerby, affecting Red Hat products that utilize Kerberos for authentication, including Red Hat AMQ, JBoss Data Grid, Enterprise Application Platform, and Red Hat JBoss Fuse. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

Weakness: CWE-358. Affected Red Hat products: AMQ Clients 2026.Q3; streams for Apache Kafka 2.

Red Hat lists Red Hat Data Grid 8; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack; streams for Apache Kafka 3 as not affected. Red Hat fixing advisory: RHSA-2026:69459.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Fixed versions
  • 2.1.2
  • kerb-server
  • RHSA-2026:69459

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • 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.

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Discussion(0)

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