CVE-2026-4868

Authorization Bypass Through User-Controlled Key in GitLab

State: Published
Severity: 8.2 High
Published: May 27, 2026
Updated: May 28, 2026
Reserved: Mar 25, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N	GitLab

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
GitLabGitLab	18.8 to before 18.10.7Affected 18.11 to before 18.11.4Affected 19.0 to before 19.0.1Affected

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/594809
HackerOne Bug Bounty Report #3619872technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/

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