CVE-2026-41065 Tautulli Vulnerable to Unauthenticated/Authenticated Remote Code Execution via Newsletter Custom Template Directory
Attackers can execute arbitrary code by pointing newsletter templates to malicious shares, affecting fresh installs without authentication or admin accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41065?
CVE-2026-41065 is a high-severity code injection vulnerability in Tautulli, published on 4 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-1336
Which versions are affected by CVE-2026-41065?
How do I fix CVE-2026-41065?
No fix has been published for CVE-2026-41065 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-41065 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41065 exists.
Sources
Also known as GHSA-68qx-mcf5-3jcp.