CVE-2026-1338

Authorization Bypass Through User-Controlled Key in GitLab

State: Published
Severity: 4.3 Medium
Published: May 14, 2026
Updated: May 14, 2026
Reserved: Jan 22, 2026

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with developer-role permissions to delete protected container registry tags due to improper authorization checks.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	GitLab

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
GitLabGitLab	17.10 to before 18.9.7Affected 18.10 to before 18.10.6Affected 18.11 to before 18.11.3Affected

References

HackerOne Bug Bounty Report #3480620technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/587326
https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/

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