Injection Vulnerability in GitLab Affecting Multiple Versions
CVE-2025-12029

8HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
11 December 2025

What is CVE-2025-12029?

GitLab has addressed a serious issue affecting multiple versions of its CE/EE products, where an attacker could exploit the Swagger UI by injecting external malicious scripts. This could lead to unauthorized actions being performed on behalf of legitimate users, highlighting the importance of robust security measures against script injection attacks.

Affected Version(s)

GitLab 15.11 < 18.4.6

GitLab 18.5 < 18.5.4

GitLab 18.6 < 18.6.2

References

https://gitlab.com/gitlab-org/gitlab/-/issues/577975
issue-trackingpermissions-required
https://hackerone.com/reports/3317485
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2025/12/10/patch-releas...

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [x0abcd_](https://hackerone.com/x0abcd_) for reporting this vulnerability through our HackerOne bug bounty program
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CVE-2025-12029 : Injection Vulnerability in GitLab Affecting Multiple Versions