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 have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitLabCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 19%
VendorProductVersion
gitlabgitlab
7.12.0 ≤
𝑥
< 18.1.6
gitlabgitlab
7.12.0 ≤
𝑥
< 18.1.6
gitlabgitlab
18.2.0 ≤
𝑥
< 18.2.6
gitlabgitlab
18.2.0 ≤
𝑥
< 18.2.6
gitlabgitlab
18.3.0 ≤
𝑥
< 18.3.2
gitlabgitlab
18.3.0 ≤
𝑥
< 18.3.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gitlab
sid
vulnerable