Server-Side Request Forgery (SSRF) in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2021-39927
Published: January 17, 2022
Vulnerability identifier: #VU59638
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2021-39927
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
Gitlab Community Edition
GitLab Enterprise Edition
GitLab Enterprise Edition
How to mitigate CVE-2021-39927
Install updates from vendor's website.
Gitlab Community Edition - addressed in versions 14.4.5, 14.5.3, 14.6.2
GitLab Enterprise Edition - addressed in versions 14.4.5, 14.5.3, 14.6.2
GitLab Enterprise Edition - addressed in versions 14.4.5, 14.5.3, 14.6.2