Access Control Bypass in GitLab CE/EE for Authenticated Users
CVE-2025-5315

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
26 June 2025

What is CVE-2025-5315?

A security issue has been identified in GitLab CE/EE that allows authenticated users with Guest role permissions to perform unauthorized actions. By sending specially crafted API requests, these users can bypass UI-imposed role restrictions, enabling them to add child items to incident work items. This vulnerability is present in all versions from 17.2 before 17.11.5, 18.0 before 18.0.3, and 18.1 before 18.1.1.

Affected Version(s)

GitLab 17.2 < 17.11.5

GitLab 18.0 < 18.0.3

GitLab 18.1 < 18.1.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/546282
issue-trackingpermissions-required
https://hackerone.com/reports/3163037
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [rhidayahh](https://hackerone.com/rhidayahh) for reporting this vulnerability through our HackerOne bug bounty program
.
CVE-2025-5315 : Access Control Bypass in GitLab CE/EE for Authenticated Users