CVE-2025-8405

EUVD-2025-202646
GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.7 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
GitLabCNA
7.7 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
17.1.0 ≤
𝑥
< 18.4.6
gitlabgitlab
17.1.0 ≤
𝑥
< 18.4.6
gitlabgitlab
18.5.0 ≤
𝑥
< 18.5.4
gitlabgitlab
18.5.0 ≤
𝑥
< 18.5.4
gitlabgitlab
18.6.0 ≤
𝑥
< 18.6.2
gitlabgitlab
18.6.0 ≤
𝑥
< 18.6.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gitlab
sid
vulnerable
Common Weakness Enumeration
References
https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/558214
https://hackerone.com/reports/3270940