CVE-2026-4868

Authorization Bypass Through User-Controlled Key in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Affected

GitLab

CVSS v3.1 GITLAB

8.2 HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS

0.46% chance of exploitation in the next 30 days, 38th percentile

Published

2026-05-27

Updated

2026-05-28

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3619872

Security advisories

• https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released

References

• CVE Record
• NVD entry