CVE-2026-31831: Tautulli: Unauthenticated Path Traversal in `/newsletter/image/images` endpoint

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-30 · updated 2026-06-17
Weakness: CWE-23

Description

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the /newsletter/image/images API endpoint is vulnerable to path traversal, allowing unauthenticated attackers to read arbitrary files from the application server's filesystem. This issue has been patched in version 2.17.0.

Affected products

Tautulli: before 2.17.0 — fixed in 2.17.0

How to fix

Upgrade to a fixed version: Tautulli 2.17.0. Check the vendor advisory for mitigations.

References

https://github.com/Tautulli/Tautulli/releases/tag/v2.17.0
https://github.com/Tautulli/Tautulli/security/advisories/GHSA-xp55-2pf4-fv8m
https://github.com/Tautulli/Tautulli/security/advisories/GHSA-xp55-2pf4-fv8m

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