Denial-of-Service Vulnerability in GitLab CE/EE by GitLab
CVE-2025-4225

5.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
27 August 2025

What is CVE-2025-4225?

A vulnerability identified within GitLab CE/EE allows unauthenticated attackers to potentially exploit the system through specially crafted GraphQL requests. This could trigger a denial-of-service condition, disrupting access for all users across affected versions. Subsequent versions have introduced patches to address this critical security issue, highlighting the importance of timely updates and comprehensive security practices.

Affected Version(s)

GitLab 14.1 < 18.1.5

GitLab 18.2 < 18.2.5

GitLab 18.3 < 18.3.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/538983
issue-trackingpermissions-required
https://hackerone.com/reports/3100624
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [pwnie](https://hackerone.com/pwnie) for reporting this vulnerability through our HackerOne bug bounty program
.
CVE-2025-4225 : Denial-of-Service Vulnerability in GitLab CE/EE by GitLab