High8.1Apache Software Foundation

High [CVE-2025-66518 +1] Apache Kyuubi Server: The security fix for CVE-2025-66518 is incomplete

This high-severity Apache Software Foundation advisory covers CVE-2025-66518 and CVE-2026-62391 affecting Apache Kyuubi Server.

CVE-2026-62391 Published Jul 31, 2026Updated by vendor Aug 4, 2026

CVE-2025-66518 CVE-2026-62391

Affected products & platforms

Apache Software FoundationUnclassified

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Summary

The security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allowlist via unprefixed Spark config aliases.

This issue affects Apache Kyuubi: from 1.6.0 before 1.12.0.

Users are recommended to upgrade to version 1.12.0, which fixes the issue.

Affected versions

1.6.0 through 1.12.0.

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

Fixed versions

1.12.0

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

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 1.12.0, which fixes the issue.

Official advisory · high-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-2025-66518 instead of the raw feed document.
CVE Program

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Official resources

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Official documentation
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Apache project downloads (fixed releases)
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