Streama Subtitle Download Path Traversal and SSRF Leading to Arbitrary File Write

Streama versions 1.10.0 through 1.10.5 and prior to commit b7c8767 contain a combination of path traversal and server-side request forgery (SSRF) vulnerabilities in that allow an authenticated attacker to write arbitrary files to the server filesystem. The issue exists in the subtitle download functionality, where user-controlled parameters are used to fetch remote content and construct file paths without proper validation. By supplying a crafted subtitle download URL and a path traversal sequence in the file name, an attacker can write files to arbitrary locations on the server, potentially leading to remote code execution.

A cross-site request forgery (CSRF) vulnerability exists in Streama up to and including v1.10.3. The application does not have CSRF checks in place when performing actions such as uploading local files. As a result, attackers could make a logged-in administrator upload arbitrary local files via a CSRF attack and send them to the attacker.