Denial of Service Vulnerability in GitLab CE/EE Products
CVE-2025-12571

7.5HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
26 November 2025

What is CVE-2025-12571?

GitLab has addressed a security issue affecting its Community Edition and Enterprise Edition, allowing unauthenticated attackers to launch a Denial of Service (DoS) attack through sending specially crafted requests that include malicious JSON payloads. This vulnerability impacts multiple versions of GitLab from version 17.10 up until version 18.6.1, making it critical for users to update their systems promptly to ensure protection against potential service disruptions. Security measures against such attack vectors are essential to maintain service availability and integrity.

Affected Version(s)

GitLab 17.10 < 18.4.5

GitLab 18.5 < 18.5.3

GitLab 18.6 < 18.6.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/579168
issue-trackingpermissions-required
https://hackerone.com/reports/3362239
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
7.5
Severity:
HIGH
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 [a92847865](https://hackerone.com/a92847865) for reporting this vulnerability through our HackerOne bug bounty program
JSON
.