UnratedApache Software Foundation

Advisory [CVE-2026-57915] Apache Kerby: Kerberos Pre-Authentication Bypass

This security Apache Software Foundation advisory covers CVE-2026-57915 affecting Apache Kerby.

CVE-2026-57915 Published Jun 26, 2026Updated by vendor Aug 3, 2026

CVE-2026-57915

Affected products & platforms

Apache Software FoundationUnclassified

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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.

Affected versions

Apache Kerby before 2.1.2

Official advisory · medium-confidence parse· fetched 2 months ago·verify at source

Fixed versions

2.1.2

Official advisory · medium-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 2.1.2, which fixes this issue.

Official advisory · medium-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed for the summary, affected/fixed versions and remediation guidance it provides.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-57915 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-57915NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
Official documentation
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Apache project downloads (fixed releases)
Official documentation
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