CVE-2026-62391: Apache Kyuubi

High severity, CVSS 8.1. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Kyuubi: from 1.6.0, before 1.12.0 (fixed in 1.12.0)

Published 2026-07-31. Last modified 2026-08-10.