CVE-2026-0752

medium

Description

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.

References

https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/

https://hackerone.com/reports/3473276

https://gitlab.com/gitlab-org/gitlab/-/issues/585371

Details

Source: Mitre, NVD

Published: 2026-02-25

Updated: 2026-02-28

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00044