CVE-2026-84664: Jenkins GitLab Plugin vulnerability
Published Sep 2, 2026
·Updated
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.
Affected Software
1 affected component
Jenkins GitLab Plugin<=1.9.16
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
jenkins/gitlab-pluginto a version that resolves this vulnerability.Fixed in 1.9.16
Event History
Sep 2, 2026
CVE Published
via MITRE·03:40 PM
Data Sourced
via MITRE·03:40 PM
Description
Data Sourced
via NVD·04:17 PM
Description
Frequently Asked Questions
1
Which plugin versions should be treated as affected?
Jenkins GitLab Plugin version 1.9.16 and earlier are affected.
2
What existing configuration makes this issue impactful?
The impact relies on GitLab API tokens that administrators have already configured in the global GitLab connection configuration. Those tokens can be used when the connection is redirected to an attacker-specified URL.
3
Is the configuration targeted by this issue global or limited to an individual job?
The issue affects the global GitLab connection configuration.