Vulnerability Description
GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 17.1.0, < 18.4.6 |
Related Weaknesses (CWE)
References
- https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-releaseRelease NotesVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/558214Broken Link
- https://hackerone.com/reports/3270940Permissions Required
FAQ
What is CVE-2025-8405?
CVE-2025-8405 is a vulnerability with a CVSS score of 7.7 (HIGH). GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perfo...
How severe is CVE-2025-8405?
CVE-2025-8405 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-8405?
Check the references section above for vendor advisories and patch information. Affected products include: Gitlab Gitlab.