CVE-2025-13690

EUVD-2025-208574
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.11 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to cause a denial of service condition due to improper input validation on webhook custom header names under certain conditions.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitLabCNA
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
16.11.0 ≤
𝑥
< 18.7.6
gitlabgitlab
16.11.0 ≤
𝑥
< 18.7.6
gitlabgitlab
18.8.0 ≤
𝑥
< 18.8.6
gitlabgitlab
18.8.0 ≤
𝑥
< 18.8.6
gitlabgitlab
18.9.0 ≤
𝑥
< 18.9.2
gitlabgitlab
18.9.0 ≤
𝑥
< 18.9.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gitlab
sid
vulnerable
Common Weakness Enumeration
References
https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/582096
https://hackerone.com/reports/3415683