# CVE-2026-49995: Tautulli stored XSS in newsletter cron field

Source: https://junglewise.ai/threats/cve-2026-49995-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-2026-49995 · Severity: info · Published 2026-09-21

Tautulli is a monitoring tool for Plex Media Server that includes a newsletter feature. An attacker with API access can inject malicious code into the newsletter cron field, which gets stored in the database. When an administrator later opens the newsletter configuration page, the malicious code executes in their browser, potentially allowing session hijacking or administrative actions to be performed without their knowledge.

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

## Quick answers

**Is CVE-2026-49995 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-49995 being exploited in the wild.

**How severe is CVE-2026-49995?** Informational severity, published 21 September 2026.

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

**Is there a fix for CVE-2026-49995?** 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-2026-49995 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-49995?** 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

A stored cross-site scripting (XSS) vulnerability exists in the newsletter configuration HTML template where the cron field value is inserted into a JavaScript string without proper JSON encoding. An authenticated attacker with API key access can craft a cron value containing JavaScript payload, and any administrator viewing the newsletter config modal will trigger execution of the stored payload in their browser context.

## Affected products

- Tautulli Tautulli prior to 2.17.2

## Timeline

- 2026-09-21: disclosed
- 2026-06-16: patched: Fixed in version 2.17.2

## References

- [https://github.com/Tautulli/Tautulli/commit/12761b2d01e78f22e54e8ad8d3133931147cbb77](https://github.com/Tautulli/Tautulli/commit/12761b2d01e78f22e54e8ad8d3133931147cbb77)
- [https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2](https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2)

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