CVE-2025-8405
Last modified
CVE-2025-8405 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 17.1.0, < 18.4.6 |
| Gitlab | Gitlab | >= 18.5.0, < 18.5.4 |
| Gitlab | Gitlab | >= 18.6.0, < 18.6.2 |
References
- https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/Release Notes, Vendor Advisory
- https://hackerone.com/reports/3270940Permissions Required
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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