PT-2026-46257 · Tautulli · Tautulli

Published 2026-06-04 · Updated 2026-06-04 · CVE-2026-43984

NVD

CVSS v3.1

8.9

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose log js errors to any authenticated user, including guest users when guest access is enabled. The endpoint writes attacker-controlled strings directly into the main application log. The administrator-only logFile view then reads that log file and embeds it into an HTML response without escaping. This creates a stored cross-site scripting condition where a low-privilege guest can inject HTML or JavaScript into the log file and have it execute in an administrator's browser when the log viewer is opened. Version 2.17.1 patches the issue.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-43984

Affected Products

Tautulli

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-43984 · Security Note
• https://github.com/Tautulli/Tautulli/releases/tag/v2.17.1 · Note
• https://github.com/Tautulli/Tautulli/security/advisories/GHSA-f4j7-pjwc-4jrr · Note