CVE-2026-0752

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.

Score

CVSS 3.1 8.0 High

Status

Analyzed - cve@gitlab.com

Published

2026-02-25

Last modified

2026-02-26

Weaknesses

CWE-79

Affected products

• Gitlab (Gitlab)

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