Tautulli up to 2.17.1 Search Endpoint search.html Query cross site scripting

Summaryinfo

A vulnerability has been found in Tautulli up to 2.17.1 and classified as problematic. This affects an unknown function of the file data/interfaces/default/search.html of the component Search Endpoint. This manipulation of the argument Query causes cross site scripting. The identification of this vulnerability is CVE-2026-45381. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Tautulli up to 2.17.1. It has been declared as problematic. Affected by this vulnerability is an unknown part of the file data/interfaces/default/search.html of the component Search Endpoint. The manipulation of the argument query with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the /search endpoint inserts its user-controlled query parameter into a JavaScript string in data/interfaces/default/search.html using manual escaping that handles quotes and slashes but not backslashes. A backslash-quote sequence can terminate the string, so an unauthenticated attacker can send a crafted link that executes script in the Tautulli web context when an authenticated user follows it. This issue is fixed in version 2.17.2.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-45381 since 05/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

By approaching the search of inurl:data/interfaces/default/search.html it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.17.2 eliminates this vulnerability.

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Productinfo

Name

• Tautulli

Version

• 2.17.0
• 2.17.1

Website

• Product: https://github.com/Tautulli/Tautulli/

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