CVE-2025-66518: Apache Kyuubi

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allow.list and use local files which are not listed in the config. This issue affects Apache Kyuubi: from 1.6.0 through 1.10.2. Users are recommended to upgrade to version 1.10.3 or upper, which fixes the issue.

Affected products

• Apache Kyuubi: from 1.6.0, before 1.10.3 (fixed in 1.10.3)

Published 2026-01-05. Last modified 2026-10-07.