Incorrect authorization in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2026-2238
Published: June 25, 2026
Vulnerability identifier: #VU135176
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-2238
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose confidential issue references on public projects.
The vulnerability exists due to improper authorization in rapid diffs when rendering public project content. A remote attacker can access affected rapid diffs to disclose confidential issue references on public projects.
Affected software
GitLab Enterprise Edition
Gitlab Community Edition
Gitlab Community Edition
How to mitigate CVE-2026-2238
Install security update from vendor's website.
GitLab Enterprise Edition - addressed in versions 18.11.6, 19.0.3, 19.1.1
Gitlab Community Edition - addressed in versions 18.11.6, 19.0.3, 19.1.1
Gitlab Community Edition - addressed in versions 18.11.6, 19.0.3, 19.1.1