CVE-2025-9642: 
GitLab vulnerability analysis and mitigation

An issue has been discovered in GitLab CE/EE affecting all versions from 14.10 before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1 that could allow an attacker to inject malicious content that may lead to account takeover. The vulnerability was assigned CVE-2025-9642 and was disclosed on September 26, 2025 (NVD Database).

The vulnerability is classified as a Cross-site Scripting (XSS) issue in Script Gadgets, identified as CWE-79 (Improper Neutralization of Input During Web Page Generation). The vulnerability has been assigned a CVSS v3.1 base score of 8.7 HIGH with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N (GitLab Release).

The vulnerability could allow an unauthenticated user to execute actions on behalf of other users by injecting malicious content, potentially leading to account takeover (GitLab Release).

GitLab has released patches in versions 18.2.7, 18.3.3, and 18.4.1. Users are strongly recommended to upgrade to one of these patched versions immediately. GitLab.com is already running the patched version, and GitLab Dedicated customers do not need to take action (GitLab Release).