Missing authorization in Kyuubi - CVE-2025-66518
Published: January 12, 2026
Vulnerability identifier: #VU121170
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-66518
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
Kyuubi
Kyuubi
Detailed vulnerability description
The vulnerability allows a remote user to gain unauthorized access to the application.
The vulnerability exists due to the application does not enforce access restrictions listed in the kyuubi.session.local.dir.allow.list config. A remote client with access to Apache Kyuubi Server via Kyuubi frontend protocol can access files not listed in the kyuubi.session.local.dir.allow.list config.
How to mitigate CVE-2025-66518
Install updates from vendor's website.