CVE-2025-2256
Improper Validation of Specified Quantity in Input in GitLab
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 12, 2025
- Updated
- Sep 12, 2025
- Reserved
- Mar 12, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitLab |
Weaknesses
- CWE-1284 Improper Validation of Specified Quantity in Input
Affected Products
| Product | Versions |
|---|---|
GitLabGitLab |
|
References
- https://about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/
- GitLab Issue #524633issue-trackingpermissions-required
- HackerOne Bug Bounty Report #3019485technical-descriptionexploitpermissions-required
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