CVE-2026-41065: Tautulli

High severity, CVSS 8.9. EPSS: 0.7% chance of exploitation in the next 30 days.

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 are vulnerable to remote code execution via the newsletter custom template directory feature. On a fresh install before the setup wizard is completed, all management endpoints are completely unauthenticated. An attacker can create a newsletter agent, point the custom template directory to an attacker-controlled SMB share serving a malicious Mako template, and trigger execution via the newsletter render endpoint, all with zero credentials and no local access to the target system. On a completed install with credentials configured, the same chain is exploitable by any admin. Version 2.17.1 fixes the issue.

Affected products

• Tautulli Tautulli: before 2.17.1 (fixed in 2.17.1)

Published 2026-06-04. Last modified 2026-07-22.