Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2021-39940

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Main Vulnerability Database Vulnerabilities #VU58759

Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2021-39940

Published: December 9, 2021


Vulnerability identifier: #VU58759
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39940
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.


Affected software

Gitlab Community Edition
GitLab Enterprise Edition
Arch Linux

How to mitigate CVE-2021-39940

Install updates from vendor's website.

Gitlab Community Edition - addressed in versions 14.3.6, 14.4.4, 14.5.2
GitLab Enterprise Edition - addressed in versions 14.3.6, 14.4.4, 14.5.2

External References

Related Security Bulletins