CVE-2026-6269

EUVD-2026-36231
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to modify hidden merge requests due to incorrect authorization enforcements.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitLabCNA
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
gitlabgitlab
15.10 ≤
𝑥
< 18.10.8
CNA
gitlabgitlab
18.11 ≤
𝑥
< 18.11.5
CNA
gitlabgitlab
19.0 ≤
𝑥
< 19.0.2
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/596625
https://hackerone.com/reports/3661880