CVE-2025-1250: 
GitLab vulnerability analysis and mitigation

A denial of service vulnerability (CVE-2025-1250) has been discovered in GitLab CE/EE affecting all versions from 15.0 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2. The vulnerability was disclosed on September 10, 2025, and allows authenticated users to stall background job processing through specially crafted inputs (GitLab Release, NVD).

The vulnerability is classified with a CVSS v3.1 base score of 6.5 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. The issue is related to the allocation of resources without limits or throttling (CWE-770) and can be triggered by sending specially crafted commit messages, merge request descriptions, or notes (GitLab Release).

When exploited, the vulnerability allows authenticated users to cause a denial of service condition by stalling background job processing, potentially affecting the availability of the GitLab instance. The impact is limited to availability with no effect on confidentiality or integrity of the system (GitLab Release, GBHackers).

GitLab has released patched versions 18.3.2, 18.2.6, and 18.1.6 for both Community Edition and Enterprise Edition. Organizations running affected versions are strongly recommended to upgrade to these patched versions immediately. GitLab.com is already running the patched version, and GitLab Dedicated customers do not need to take any action (GitLab Release).

The vulnerability was discovered and reported through GitLab's HackerOne bug bounty program by researcher pwnie. The discovery was part of a larger security update that addressed multiple vulnerabilities in GitLab, including other denial-of-service and SSRF issues (GBHackers).