CVE-2025-2256 — Improper Validation of Specified Quantity in Input in Gitlab

CWE-1284 — Improper Validation of Specified Quantity in Input4 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 88.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
GitlabDebian GitlabGitlab CE
Timeline
PublishedSep 12

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶CVEListV5gitlab/gitlab7.12 — 18.1.6+2
▶NVDgitlab/gitlab7.12.0 — 18.1.6+2
▶debiandebian/gitlab
▶gitlabgitlab/gitlab

🔴Vulnerability Details

1
GHSA
GHSA-m8q6-f6pj-j3mh: An issue has been discovered in GitLab CE/EE affecting all versions from 7↗2025-09-12
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📋Vendor Advisories

2
GitLab
CVE-2025-2256: 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 hav↗2025-09-12
▶
Debian
CVE-2025-2256: gitlab - An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 be...↗2025
▶