Cross-Site Request Forgery (CSRF) in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-3857
Published: March 25, 2026
Vulnerability identifier: #VU124599
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-3857
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition
Gitlab Community Edition
GitLab Enterprise Edition
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary GraphQL mutations on behalf of authenticated users.
The vulnerability exists due to insufficient CSRF protection in the GLQL API when handling requests. A remote attacker can trick an authenticated user into clicking a malicious link to execute arbitrary GraphQL mutations on behalf of the user.
How to mitigate CVE-2026-3857
Install security update from vendor's website.