CVE-2026-4527

EUVD-2026-30230
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.
CSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
11.10.0 ≤
𝑥
< 18.9.7
gitlabgitlab
11.10.0 ≤
𝑥
< 18.9.7
gitlabgitlab
18.10.0 ≤
𝑥
< 18.10.6
gitlabgitlab
18.10.0 ≤
𝑥
< 18.10.6
gitlabgitlab
18.11.0 ≤
𝑥
< 18.11.3
gitlabgitlab
18.11.0 ≤
𝑥
< 18.11.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/594339
https://hackerone.com/reports/3590487