High severity8.5NVD Advisory· Published Apr 8, 2026· Updated Apr 16, 2026
CVE-2026-5173
CVE-2026-5173
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*+ 1 more
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*range: >=16.9.6,<18.8.9
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*range: >=16.9.6,<18.8.9
Patches
Vulnerability mechanics
References
1- about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/nvdRelease NotesVendor Advisory
News mentions
1- GitLab Patch Release: 18.10.3, 18.9.5, 18.8.9GitLab Security Releases · Apr 8, 2026