Icollect <= 1.0.0 - Unauthenticated Arbitrary File Read, SSRF and Path Traversal File Write via Default Publishing Password

Description

The plugin does not require a per-install secret for one of its unauthenticated endpoints, relying on a hardcoded default, and does not validate the URLs or destination paths it is given, allowing unauthenticated attackers to read arbitrary files from the server, force it to issue arbitrary requests and retrieve the responses, and write attacker-supplied content outside the uploads directory.