CVE-2026-84664 — MEDIUM (5.4)

Vulnerability Description

Jenkins GitLab Plugin 1.9.16 and earlier allows overwriting the global GitLab connection configuration through Stapler data binding, allowing attackers to connect to an attacker-specified URL using GitLab API tokens already configured by administrators.

CVSS Score

5.4

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-494 CWE-471

References

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4097

FAQ

What is CVE-2026-84664?

CVE-2026-84664 is a vulnerability with a CVSS score of 5.4 (MEDIUM). Jenkins GitLab Plugin 1.9.16 and earlier allows overwriting the global GitLab connection configuration through Stapler data binding, allowing attackers to connect to an attacker-specified URL using Gi...

How severe is CVE-2026-84664?

CVE-2026-84664 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-84664?

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