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.
History

Fri, 12 Sep 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 12 Sep 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


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

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon 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

cve-icon Vulnrichment

Updated: 2025-09-12T17:19:28.932Z

cve-icon NVD

Status : Received

Published: 2025-09-12T06:15:42.340

Modified: 2025-09-12T06:15:42.340

Link: CVE-2025-2256

cve-icon Redhat

Severity : Important

Publid Date: 2025-09-12T06:06:04Z

Links: CVE-2025-2256 - Bugzilla