CVE-2026-84664 Server-side request forgery in Jenkins GitLab Plugin
Attackers can overwrite GitLab connection settings to redirect API calls to malicious URLs, potentially exposing configured tokens and data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84664?
CVE-2026-84664 is a medium-severity server-side request forgery vulnerability in Jenkins GitLab Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-84664?
How do I fix CVE-2026-84664?
No fix has been published for CVE-2026-84664 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-84664 being exploited?
There is no known exploitation of CVE-2026-84664 in the wild and no public exploit code.
Sources
Also known as GHSA-jr72-9pg2-8hj8.