Denial of Service Vulnerability in GitLab by GitLab Inc.
CVE-2025-0186

6.5MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
22 April 2026

What is CVE-2025-0186?

A vulnerability in GitLab CE/EE allows authenticated users to induce denial of service by making specially crafted requests to a discussions endpoint, potentially leading to resource exhaustion on the server. This issue affects multiple versions of GitLab from 10.6 up to specific versions in the 18.x series. Upgrading to the patched versions is essential to mitigate this risk.

Affected Version(s)

GitLab 10.6 < 18.9.6

GitLab 18.10 < 18.10.4

GitLab 18.11 < 18.11.1

References

https://hackerone.com/reports/2915694
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/511312
https://about.gitlab.com/releases/2026/04/22/patch-releas...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
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
.