Information disclosure in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2025-3950

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Main Vulnerability Database Vulnerabilities #VU121079

Information disclosure in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2025-3950

Published: January 7, 2026


Vulnerability identifier: #VU121079
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-3950
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition

Detailed vulnerability description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in Mermaid diagram rendering. A remote user can obtain sensitive connection information by referencing specially crafted images that bypass asset proxy protection.


How to mitigate CVE-2025-3950

Install updates from vendor's website.

Sources