Improper access control in Apache Kyuubi - CVE-2026-62391
Published: August 25, 2026
Vulnerability identifier: #VU145164
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-62391
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass server-side configuration restrictions.
The vulnerability exists due to improper access control in kyuubi.session.local.dir.allowlist handling when processing unprefixed Spark file configuration aliases. A remote user can supply unprefixed Spark file-conf aliases to bypass server-side configuration restrictions.
Exploitation requires access to Apache Kyuubi Server via Kyuubi frontend protocols.
Affected software
Apache Kyuubi
How to mitigate CVE-2026-62391
Install security update from vendor's website.
Apache Kyuubi - update to 1.12.0