Perch Content Management System 3.0.3 allows unrestricted file upload (with resultant XSS) via the Asset Title field in conjunction with the Select File field. This is exploitable with a Limited Admin account.

Perch CMS 3.2 contains a remote code execution vulnerability that allows authenticated administrators to upload arbitrary PHP files through the assets management interface. Attackers can upload a malicious .phar file with embedded system command execution capabilities to execute arbitrary commands on the server.

Perch CMS 3.2 contains a stored cross-site scripting vulnerability that allows authenticated users to upload malicious SVG files with embedded JavaScript. Attackers can craft SVG files with script tags that execute when the file is viewed, potentially stealing user session information or performing client-side attacks.