Authorization bypass through user-controlled key in GitLab Enterprise Edition - CVE-2026-4868
Published: May 28, 2026
Vulnerability identifier: #VU132672
CSH Severity: Medium
CVSS v4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-4868
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper user identity resolution when triggering Duo AI workflow runners. A remote user can cause specific Duo AI workflows to run under another user’s identity.
Affected software
GitLab Enterprise Edition
How to mitigate CVE-2026-4868
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 18.10.7, 18.11.4, 19.0.1