CVE-2025-12029
High
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have, under certain circumstances, allowed an unauthenticated user to perform unauthorized actions on behalf of another user by injecting malicious external scripts into the Swagger UI."
SeverityHigh
CVSS8.0
Exploit probability—
Product
Gitlab
PublishedDec 11, 2025
First seenDec 11, 2025
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- gitlab gitlab18.4.6, 18.5.4, 18.6.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gitlab gitlab | 15.11.0 ≤ v < 18.4.6, 18.5.0 ≤ v < 18.5.4, 18.6.0 ≤ v < 18.6.2 | 18.4.6, 18.5.4, 18.6.2 |
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