CVE-2026-6976

EUVD-2026-36228
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 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 hide changes from merge request diff views due to improper input handling of file names.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.7 LOW
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
15.9.0 ≤
𝑥
< 18.10.8
gitlabgitlab
15.9.0 ≤
𝑥
< 18.10.8
gitlabgitlab
18.11.0 ≤
𝑥
< 18.11.5
gitlabgitlab
18.11.0 ≤
𝑥
< 18.11.5
gitlabgitlab
19.0.0 ≤
𝑥
< 19.0.2
gitlabgitlab
19.0.0 ≤
𝑥
< 19.0.2
𝑥
= Vulnerable software versions
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/598165
https://hackerone.com/reports/3638136