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.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Gitlab |
|
No data.
No data.
No data.
Advisories
No advisories yet.
Fixes
Solution
Upgrade to versions 18.4.5, 18.5.3, 18.6.1 or above.
Workaround
No workaround given by the vendor.
References
History
Wed, 26 Nov 2025 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Authentication Bypass by Spoofing in GitLab | |
| First Time appeared |
Gitlab
Gitlab gitlab |
|
| Weaknesses | CWE-290 | |
| CPEs | cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Gitlab
Gitlab gitlab |
|
| References |
| |
| Metrics |
cvssV3_1
|
MITRE
Status: PUBLISHED
Assigner: GitLab
Published:
Updated: 2025-11-26T19:46:12.641Z
Reserved: 2025-11-03T20:33:36.697Z
Link: CVE-2025-12653
Vulnrichment
No data.
NVD
Status : Received
Published: 2025-11-26T20:15:49.023
Modified: 2025-11-26T20:15:49.023
Link: CVE-2025-12653
Redhat
No data.
OpenCVE Enrichment
No data.