GitLab.Community.and.Enterprise.Edition.Milestone.XSS

Description

This indicates an attack attempt to exploit a Cross-Site Scripting Vulnerability in GitLab GitLab Community Edition (CE) and Enterprise Edition (EE).
The vulnerability is due to improper sanitization of user input submitted in milestone references. A remote, authenticated attacker can exploit this vulnerability by by sending a crafted request to the target server. Successful exploitation could result in arbitrary script execution in the security context of the target user's browser.

Affected Products

GitLab GitLab Community Edition (CE) and Enterprise Edition (EE) 14.8.x prior to 14.8.5
GitLab GitLab Community Edition (CE) and Enterprise Edition (EE) 14.9.x prior to 14.9.2
GitLab GitLab Community Edition (CE) and Enterprise Edition (EE) 8.3 prior to 14.7.7

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://about.gitlab.com/releases/2022/03/31/critical-security-release-gitlab-14-9-2-released/#stored-xss-on-multi-word-milestone-reference

CVE References