---
id: CVE-2026-54915
title: Tautulli is a Python based monitoring and tracking tool for Plex Media Server
summary: >-
  Tautulli is a Python based monitoring and tracking tool for Plex Media Server.
  Prior to 2.17.2, the unauthenticated /auth/redirect endpoint in
  plexpy/webauth.py removes forward slashes from the user-controlled
  redirect_uri parameter but …
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-601
vendor: Tautulli
product: Tautulli
affected:
  - Tautulli < 2.17.2
published: '2026-09-21'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T23:17:11.303'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54915'
references:
  - url: >-
      https://github.com/Tautulli/Tautulli/commit/07f9beaa0286f1ab3b5e6be9726c5b2de07ee9dd
    label: security-advisories@github.com
  - url: 'https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm
    label: security-advisories@github.com
  - url: >-
      https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T22:32:41.588945Z'
epss: 0.00366
epssPercentile: 0.2764
ingestedAt: '2026-09-21T19:51:58.878Z'
---

## Overview

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the unauthenticated /auth/redirect endpoint in plexpy/webauth.py removes forward slashes from the user-controlled redirect_uri parameter but leaves tab, line-feed, and carriage-return characters intact. With the default root HTTP_ROOT configuration, CherryPy HTTPRedirect passes the resulting value to urllib.parse.urljoin, which can resolve the whitespace-bearing path to an attacker-controlled external origin. A user who follows a crafted link can therefore be redirected outside Tautulli for phishing or post-login redirect-flow abuse, while custom non-root HTTP_ROOT configurations are not affected by this bypass. This issue is fixed in version 2.17.2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.