CVE-2026-0752

EUVD-2026-8720
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that under certain circumstances, could have allowed an unauthenticated user to inject arbitrary scripts into the Mermaid sandbox UI.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
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
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
16.2.0 ≤
𝑥
< 18.7.5
gitlabgitlab
16.2.0 ≤
𝑥
< 18.7.5
gitlabgitlab
18.8.0 ≤
𝑥
< 18.8.5
gitlabgitlab
18.8.0 ≤
𝑥
< 18.8.5
gitlabgitlab
18.9.0
gitlabgitlab
18.9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gitlab
sid
vulnerable
Common Weakness Enumeration
References
https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/585371
https://hackerone.com/reports/3473276