PT-2026-40867 · Gitlab · Gitlab Ce/Ee

Published 2026-05-14 · Updated 2026-05-18 · CVE-2026-4527

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 11.10 through 18.9.6 GitLab CE/EE versions 18.10 through 18.10.5 GitLab CE/EE versions 18.11 through 18.11.2

Description Missing Cross-Site Request Forgery (CSRF) protection—a flaw where an attacker tricks a victim into performing actions they did not intend—could allow an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace using a specially crafted link.

Recommendations Update to version 18.9.7 Update to version 18.10.6 Update to version 18.11.3

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

BDU:2026-07020

BIT-GITLAB-2026-4527

CVE-2026-4527

Affected Products

Gitlab Ce/Ee

References · 9

• 🔥 https://hackerone.com/reports/3590487 · Exploit
• https://ubuntu.com/security/CVE-2026-4527 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-4527 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07020 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-4527 · Security Note
• https://osv.dev/vulnerability/BIT-gitlab-2026-4527 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4527 · Security Note
• https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released · Note
• https://gitlab.com/gitlab-org/gitlab/-/work_items/594339 · Note