PT-2026-40857 · Gitlab · Gitlab

Published 2026-05-14 · Updated 2026-05-14 · CVE-2026-1184

NVD

CVSS v3.1

6.5

Medium

Base vector

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

GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially crafted file due to improper validation.

Exploit

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-1184

Affected Products

Gitlab

References · 4

• 🔥 https://hackerone.com/reports/3515842 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1184 · 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/586634 · Note