Is CVE-2025-66518 actively exploited?

No active exploitation of CVE-2025-66518 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-66518 be exploited remotely?

Yes. CVE-2025-66518 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-66518?

CVE-2025-66518 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2025-66518

HIGH

CVE-2025-66518

CWE-27Published: January 5, 2026· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2025-66518 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.