What’s Vulnerable › Vulnerabilities

CVE-2026-41065: Tautulli Vulnerable to Unauthenticated/Authenticated Remote Code Execution via Newsletter Custom Template Directory

• Severity: high (CVSS 8.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-04 · updated 2026-07-22
• Weakness: CWE-1336

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.

Affected products

• Tautulli: before 2.17.1

References

• https://github.com/Tautulli/Tautulli/releases/tag/v2.17.1
• https://github.com/Tautulli/Tautulli/security/advisories/GHSA-68qx-mcf5-3jcp
• https://github.com/Tautulli/Tautulli/security/advisories/GHSA-68qx-mcf5-3jcp

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