CVE-2026-62391 PUBLISHED

Apache Kyuubi: kyuubi.session.local.dir.allow.list bypass via unprefixed Spark file-conf aliases

Assigner: apache
Reserved: 14.07.2026 Published: 31.07.2026 Updated: 31.07.2026

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.

Product Status

Vendor Apache Software Foundation
Product Apache Kyuubi
Versions Default: unaffected
  • affected from 1.6.0 to 1.12.0 (excl.)

Credits

  • Anand Nalya finder

References

Problem Types

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE
  • CWE-27 Path Traversal: 'dir/../../filename' CWE