CVE-2026-62391 — HIGH (8.1)

Vulnerability 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.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-27 CWE-22

References

https://lists.apache.org/thread/vo4k4nxz23kfzrpp120nsojb0vrkx4w1

FAQ

What is CVE-2026-62391?

CVE-2026-62391 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 ...

How severe is CVE-2026-62391?

CVE-2026-62391 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-62391?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.