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.
                
            Metrics
Affected Vendors & Products
References
        History
                    Mon, 22 Sep 2025 16:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| CPEs | cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | 
Fri, 12 Sep 2025 18:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | ssvc 
 | 
Fri, 12 Sep 2025 12:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References |  | |
| Metrics | threat_severity 
 | threat_severity 
 | 
Fri, 12 Sep 2025 06:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| 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. | |
| Title | Improper Validation of Specified Quantity in Input in GitLab | |
| First Time appeared | Gitlab Gitlab gitlab | |
| Weaknesses | CWE-1284 | |
| CPEs | cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* | |
| Vendors & Products | Gitlab Gitlab gitlab | |
| References |  | |
| Metrics | cvssV3_1 
 | 
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: GitLab
Published: 2025-09-12T06:06:04.796Z
Updated: 2025-09-12T17:19:32.801Z
Reserved: 2025-03-12T15:05:04.877Z
Link: CVE-2025-2256
 Vulnrichment
                        Vulnrichment
                    Updated: 2025-09-12T17:19:28.932Z
 NVD
                        NVD
                    Status : Analyzed
Published: 2025-09-12T06:15:42.340
Modified: 2025-09-20T02:56:22.680
Link: CVE-2025-2256
 Redhat
                        Redhat