PT-2026-40859 · Gitlab · Gitlab

Published 2026-05-14 · Updated 2026-05-14 · CVE-2026-1338

Mitre

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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.

Exploit

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-1338

Affected Products

Gitlab

References · 4

• 🔥 https://hackerone.com/reports/3480620 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1338 · Security Note
• https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released · Note
• https://gitlab.com/gitlab-org/gitlab/-/work_items/587326 · Note