Unrated severityNVD Advisory· Published Sep 12, 2025· Updated Sep 12, 2025
Improper Validation of Specified Quantity in Input in GitLab
CVE-2025-2256
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*range: 7.12
- (no CPE)range: >=7.12, <18.1.6, >=18.2, <18.2.6, >=18.3, <18.3.2
Patches
Vulnerability mechanics
References
3- hackerone.com/reports/3019485mitretechnical-descriptionexploitpermissions-required
- gitlab.com/gitlab-org/gitlab/-/issues/524633mitreissue-trackingpermissions-required
- about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/mitre
News mentions
1- GitLab Patch Release: 18.3.2, 18.2.6, 18.1.6GitLab Security Releases · Sep 10, 2025