CVE-2026-13320

EUVD-2026-42402
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.7 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user to execute arbitrary scripts in another user's browser session due to improper sanitization of user-supplied input.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.3 HIGH
NETWORK
HIGH
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 26.29%
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
15.7.0 ≤
𝑥
< 18.11.7
gitlabgitlab
15.7.0 ≤
𝑥
< 18.11.7
gitlabgitlab
19.0.0 ≤
𝑥
< 19.0.4
gitlabgitlab
19.0.0 ≤
𝑥
< 19.0.4
gitlabgitlab
19.1.0 ≤
𝑥
< 19.1.2
gitlabgitlab
19.1.0 ≤
𝑥
< 19.1.2
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
gitlab
jammy
dne
noble
dne
questing
dne
resolute
dne
Common Weakness Enumeration
References
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-2-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/604063
https://hackerone.com/reports/3816917