CVE-2026-31804 Tautulli: Unauthenticated pms_image_proxy endpoint proxies arbitrary HTTP requests through the Plex Media Server

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the /pmsimageproxy endpoint accepts a user-supplied img parameter and forwards it to Plex Media Server's /photo/:/ transcode transcoder without authentication and without restricting the scheme...

CVE-2026-31804

CVE-2026-31804 affects Tautulli (Python-based Plex monitor) before version 2.17.0. The vulnerable /pms_image_proxy endpoint accepts a user-controlled img parameter and forwards it to Plex Media Server’s /photo/:/ transcode transcoder without authentication or host/scheme restrictions. Because web...