CVE-2026-5309

Authorization Bypass Through User-Controlled Key in GitLab

State: Published
Severity: 5.4 Medium
Published: Jun 25, 2026
Updated: Jun 25, 2026
Reserved: Apr 1, 2026

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.6 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user to read or modify another group's virtual registry cleanup policy settings without authorization.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	GitLab

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
GitLabGitLab	18.6 to before 18.11.6Affected 19.0 to before 19.0.3Affected 19.1 to before 19.1.1Affected

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/595468
HackerOne Bug Bounty Report #3628793technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/

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