CVE-2026-45381: Tautulli: Reflected XSS in `/search` endpoint
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Tautullito a version that resolves this vulnerability.Fixed in 2.17.2
Event History
Frequently Asked Questions
Who needs to interact with a malicious request for exploitation to succeed?
An authenticated Tautulli user must follow an attacker-crafted link. The attacker does not need to authenticate to create or send the malicious request.
Which deployments are affected?
Tautulli versions prior to 2.17.2 are affected where the /search endpoint is reachable by a user who can be induced to follow a crafted link.
What should be done if the instance cannot be upgraded immediately?
The provided information identifies upgrading to version 2.17.2 as the fix. No alternative mitigation or workaround is specified.