CVE-2026-62391

Apache Kyuubi: kyuubi.session.local.dir.allow.list bypass via unprefixed Spark file-conf aliases

State: Published
Severity: 8.1 High
Published: Jul 31, 2026
Updated: Jul 31, 2026
Reserved: Jul 14, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-27 Path Traversal: 'dir/../../filename'

Affected Products

Product	Versions
Apache KyuubiApache Software Foundation	1.6.0 to before 1.12.0Affected

References

https://lists.apache.org/thread/vo4k4nxz23kfzrpp120nsojb0vrkx4w1vendor-advisory

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