#VU125887 Cross-site scripting in October CMS - CVE-2025-61674
Published: April 14, 2026
October CMS
OctoberCMS
Description
The vulnerability allows a remote user to execute arbitrary script in backend user sessions.
The vulnerability exists due to cross-site scripting in backend configuration forms when processing editor settings markup styles input. A remote privileged user can inject malicious HTML or JavaScript into the stylesheet input to execute arbitrary script in backend user sessions.
User interaction is required, and the injected script can affect backend pages viewed by other users.