PT-2026-40859 · Gitlab · Gitlab Ce/Ee

Published 2026-05-14 · Updated 2026-05-18 · CVE-2026-1338

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 17.10 through 18.9.6 GitLab CE/EE versions 18.10 through 18.10.5 GitLab CE/EE versions 18.11 through 18.11.2

Description An improper authorization check allows an authenticated user with developer-role permissions to delete protected container registry tags.

Recommendations Update to version 18.9.7 Update to version 18.10.6 Update to version 18.11.3

Exploit

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

BDU:2026-07013

BIT-GITLAB-2026-1338

CVE-2026-1338

Affected Products

Gitlab Ce/Ee

References · 10

• 🔥 https://hackerone.com/reports/3480620 · Exploit
• https://ubuntu.com/security/CVE-2026-1338 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1338 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-1338 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-1338 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-gitlab-2026-1338 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07013 · Security Note
• https://gitlab.com/gitlab-org/gitlab/-/work_items/587326 · Note
• https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released · Note
• https://t.me/cveNotify/163734 · Telegram Post