CVE-2025-12653
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GitLab | GitLab | 18.3 < 18.4.5 | affected |
| GitLab | GitLab | 18.5 < 18.5.3 | affected |
| GitLab | GitLab | 18.6 < 18.6.1 | affected |
Weaknesses
- CWE-290: CWE-290: Authentication Bypass by Spoofing
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- https://about.gitlab.com/releases/2025/11/26/patch-release-gitlab-18-6-1-released/
- https://gitlab.com/gitlab-org/gitlab/-/issues/579372
- https://hackerone.com/reports/3370245
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.