GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.7 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2, that could have allowed a blocked user to access sensitive information by establishing GraphQL subscriptions through WebSocket connections.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/ Release Notes, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · gitlabNVD modified 2026-10-19 13:10
Affected (CPE criteria) 2
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
References 3
- https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/ Release Notes, Vendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/526360 Broken Link
- https://hackerone.com/reports/3049150 Permissions Required