CVE-2026-28505 Tautulli: RCE via eval() sandbox bypass using lambda nested scope to escape co_names whitelist check

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the streval function in notificationhandler.py implements a sandboxed eval for notification text templates. The sandbox attempts to restrict callable names by inspecting code.conames of the...

CVE-2026-28505

CVE-2026-28505 is referenced in PT Security records as linked to Tautulli with a HIGH severity. The initial entry is reserved with no public details, and the connected PT-security entries list CVE-2026-28505 among many CVEs but do not provide root-cause, affected versions, exploitation details, o...

CVE-2026-28505 Tautulli: RCE via eval() sandbox bypass using lambda nested scope to escape co_names whitelist check

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the streval function in notificationhandler.py implements a sandboxed eval for notification text templates. The sandbox attempts to restrict callable names by inspecting code.conames of the...