CVE-2026-4527

MEDIUM 6.5

Cross-Site Request Forgery (CSRF) in GitLab

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-352
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	May 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

GitLab / GitLab

11.10 < 18.9.7 18.10 < 18.10.6 18.11 < 18.11.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/594339 hackerone.com: https://hackerone.com/reports/3590487 about.gitlab.com: https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/

Credits

Thanks [maksyche](https://hackerone.com/maksyche) for reporting this vulnerability through our HackerOne bug bounty program