Information disclosure in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2021-39941
Published: December 9, 2021
Vulnerability identifier: #VU58781
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39941
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote attacker can see the default branch name for projects that restrict access to the repository to project members.
Affected software
GitLab Enterprise Edition
Gitlab Community Edition
Arch Linux
Gitlab Community Edition
Arch Linux
How to mitigate CVE-2021-39941
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 14.3.6, 14.4.4, 14.5.2
Gitlab Community Edition - addressed in versions 14.3.6, 14.4.4, 14.5.2
Gitlab Community Edition - addressed in versions 14.3.6, 14.4.4, 14.5.2