CVE-2026-45381 Tautulli: Reflected XSS in `/search` endpoint
An unauthenticated attacker can execute arbitrary scripts in the Tautulli web context via a crafted link, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-45381?
CVE-2026-45381 is a medium-severity cross-site scripting vulnerability in Tautulli, published on 21 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-45381?
How do I fix CVE-2026-45381?
No fix has been published for CVE-2026-45381 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-45381 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45381 exists.
Sources
Also known as GHSA-mjvc-6cc2-6ffr.