CVE-2026-5816

EUVD-2026-25046
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitLabCNA
8 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
gitlabgitlab
18.10 ≤
𝑥
< 18.10.4
CNA
gitlabgitlab
18.11 ≤
𝑥
< 18.11.1
CNA
Debian logo
Debian Releases
Debian Product
Codename
gitlab
sid
17.6.5-19
fixed