# CVE-2026-45381: Tautulli reflected XSS in search query

Source: https://junglewise.ai/threats/cve-2026-45381-tautulli-is-a-python-based-monitoring-and-tracking-tool-for-plex  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-21. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-45381 · Severity: info · Published 2026-09-21

Tautulli is a monitoring tool for Plex Media Server that tracks playback and user activity. An attacker can craft a malicious link to the search feature that executes JavaScript code in the context of any authenticated user who clicks it, potentially allowing account takeover, data theft, or unauthorized actions on the Plex server.

Technologies: [Tautulli](https://junglewise.ai/threats/technologies/tautulli). Vendors: [Tautulli](https://junglewise.ai/threats/vendors/tautulli).

## Quick answers

**Is CVE-2026-45381 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-45381 being exploited in the wild.

**How severe is CVE-2026-45381?** Informational severity, published 21 September 2026.

**Which products and versions are affected?** Tautulli prior to 2.17.2.

**Is there a fix for CVE-2026-45381?** A patch was published on 2026-06-16: Fixed in version 2.17.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-45381 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-45381?** Check whether you run Tautulli at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The /search endpoint fails to properly escape backslashes in user-supplied query parameters before inserting them into JavaScript string context in search.html. An attacker can inject a backslash-quote sequence to break out of the string and inject arbitrary JavaScript, which executes in the browser of any authenticated user who follows a crafted link. The vulnerability requires user interaction (clicking a link) but does not require authentication from the attacker.

## Affected products

- Tautulli Tautulli prior to 2.17.2

## Timeline

- 2026-06-16: disclosed
- 2026-06-16: patched: Fixed in version 2.17.2

## References

- [https://github.com/Tautulli/Tautulli/commit/3bee54087370fc275b13565a9e58235341bb4cf7](https://github.com/Tautulli/Tautulli/commit/3bee54087370fc275b13565a9e58235341bb4cf7)
- [https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2](https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2)

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