Description
GitLab has remediated an issue in GitLab EE affecting all versions from 11.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with project Maintainer permissions could have accessed the terminal of a protected environment they were not authorized to use due to improper authorization checks.
Affected products
gitlab: gitlab
References3
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-re… Release NotesVendor Advisory
- gitlab.com/gitlab-org/gitlab/-/work_items/591189 Issue TrackingVendor Advisory
- hackerone.com/reports/3529751 Permissions RequiredThird Party Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 25 · as of 9 November 2026
- CWE
- CWE-288
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.