Vulnerability Description
Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose `configUpdate` as a state-changing administrator endpoint, but the route does not enforce `POST` and does not use any anti-CSRF token. In the default form and JWT-based authentication mode, the administrator session cookie is issued with `SameSite=Lax`, which still permits top-level cross-site navigation requests. An attacker can exploit this by luring a logged-in administrator to a malicious page that submits a cross-site request to `/configUpdate` and overwrites the local administrator username and password. The attacker can then sign in directly with the chosen credentials and take over the Tautulli administrative interface. Version 2.17.1 patches the issue.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/Tautulli/Tautulli/releases/tag/v2.17.1
- https://github.com/Tautulli/Tautulli/security/advisories/GHSA-v622-pmjj-gpx3
- https://github.com/Tautulli/Tautulli/security/advisories/GHSA-v622-pmjj-gpx3
FAQ
What is CVE-2026-43985?
CVE-2026-43985 is a vulnerability with a CVSS score of 8.8 (HIGH). Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose `configUpdate` as a state-changing administrator endpoint, but the route does not enforce...
How severe is CVE-2026-43985?
CVE-2026-43985 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43985?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.