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TI-2026-41694 Aliases CVE-2026-57915GHSA-262p-fj3f-xh7v

Apache Kerby: Kerberos Pre-Authentication Bypass

Priority LOW 39CWE-304Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00526 44th percentileScored 2026-11-07
Fix Fixed Apache Kerby (Apache Software Foundation): 2.1.2org.apache.kerby:kerb-server (Maven): 2.1.2Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Kerbybefore 2.1.22.1.2Patch availableCNA
—org.apache.kerby:kerb-server (Maven)before 2.1.22.1.2Patch availableGHSA-262p-fj3f-xh7v
  • Apache Kerby VendorApache Affected before 2.1.2 Fixed in 2.1.2 Patch available CNA
  • org.apache.kerby:kerb-server (Maven) Vendor— Affected before 2.1.2 Fixed in 2.1.2 Patch available GHSA-262p-fj3f-xh7v

Remediation

  • Fix · CNA Apache Kerby (Apache Software Foundation) Fixed in 2.1.2
  • Fix · GHSA-262p-fj3f-xh7v org.apache.kerby:kerb-server (Maven) Fixed in 2.1.2 Advisory →

Red Hat 1 advisory

  • RHSA-2026:69459 Released 2026-09-21 · Red Hat rating Important
    AMQ Clients 2026.Q3
    • AMQ Clients 2026.Q3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache Kerby 2.1.2

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-41693 Apache Kerby: StackOverflow on parsing deeply nested ASN1 structuresPriority LOW 29
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
AMQ Clients 2026.Q3Fixed RHSA-2026:69459
Not affected: 5 products
  • Red Hat Data Grid 8
  • Red Hat Fuse 7
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • streams for Apache Kafka 2
  • streams for Apache Kafka 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57915
  2. 2026-10-03 Alias added: GHSA-262p-fj3f-xh7v
  3. 2026-11-03 Affected versions changed · Red Hat
  4. 2026-11-03 Fix available: Maven/org.apache.kerby:[email protected] · GHSA-262p-fj3f-xh7v
  5. 2026-11-03 CVSS score added · GHSA-262p-fj3f-xh7v
  6. 2026-11-03 Weakness changed · GHSA-262p-fj3f-xh7v
  7. 2026-11-03 9 new references · GHSA-262p-fj3f-xh7v

References

Advisory 2

Other 7

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

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