Denial of Service Vulnerability in GitLab CE/EE
CVE-2025-12576

6.5MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
11 March 2026

What is CVE-2025-12576?

GitLab has addressed a vulnerability within its Community Edition (CE) and Enterprise Edition (EE) platforms that could potentially allow an authenticated user to trigger a denial of service. This issue stems from insufficient handling of data received from webhook responses under certain conditions, impacting versions prior to the specified patches. Users are encouraged to update to the latest versions to mitigate this risk and ensure the integrity of their systems.

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Deploy the Patch

Affected Version(s)

GitLab 9.3 < 18.7.6

GitLab 18.8 < 18.8.6

GitLab 18.9 < 18.9.2

References

https://hackerone.com/reports/3395198
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/579170
https://about.gitlab.com/releases/2026/03/11/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 [sim4n6](https://hackerone.com/sim4n6) for reporting this vulnerability through our HackerOne bug bounty program
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