CVE-2026-0752
High
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.
SeverityHigh
CVSS8.0
Exploit probability—
Product
Gitlab
PublishedFeb 25, 2026
First seenFeb 25, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- gitlab gitlab18.7.5, 18.8.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gitlab gitlab | 16.2.0 ≤ v < 18.7.5, 18.8.0 ≤ v < 18.8.5, 18.9.0 | 18.7.5, 18.8.5 |
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