Apache Kyuubi: kyuubi.session.local.dir.allow.list bypass via unprefixed Spark file-conf aliases
Priority LOW 39CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00788 56th percentileScored 2026-11-07
Fix Fixed Apache Kyuubi (Apache Software Foundation): 1.12.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Apache Kyuubi (Apache Software Foundation) Fixed in 1.12.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-62391
- 2026-10-03 Alias added: GHSA-pp6r-c7gq-g5pr
References
More Apache Kyuubi vulnerabilities
- TI-2026-37809 Apache Kyuubi: REST batch multipart upload path traversal allows controlled file write CVSS 3.1CRITICAL 9.8
- TI-2026-19260 Apache Kyuubi: Unrestricted access via Kyuubi engine-ui proxy CVSS 3.1HIGH 7.3
- TI-2025-40939 Apache Kyuubi: Unauthorized directory access due to missing path normalization CVSS 4.0HIGH 8.8
Sources
- CVE-2026-62391 · CVE Program
- CVE-2026-62391 · NVD
- FIRST EPSS
- GHSA-pp6r-c7gq-g5pr · GitHub Advisory Database · CC BY 4.0
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