GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.12 to 18.2.8, 18.3 to 18.3.4, and 18.4 to 18.4.2 that could make the GitLab instance unresponsive or severely degraded by sending crafted GraphQL queries requesting large repository blobs.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://about.gitlab.com/releases/2025/10/08/patch-release-gitlab-18-4-2-released/ Release Notes, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · gitlabNVD modified 2026-10-19 16:10
Affected (CPE criteria) 2
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
References 3
- https://about.gitlab.com/releases/2025/10/08/patch-release-gitlab-18-4-2-released/ Release Notes, Vendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/568121 Broken Link
- https://hackerone.com/reports/3026555 Permissions Required