Sulu is a PHP content management system. Sulu is vulnerable against XSS whereas a low privileged user with access to the “Media” section can upload an SVG file with a malicious payload. Once uploaded and accessed, the malicious javascript will be executed on the victims’ (other users including admins) browsers. This issue is fixed in 2.6.5.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.