CVE-2026-96652

Plex Media Server

Published 23 Sept 2026 · updated 20 Oct 2026 · Modified

5.3 Medium · CVSS 4.0, CNA

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 20 Oct 2026, with a remediation deadline of 3 Nov 2026 for US federal agencies.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description

Plex Media Server before 1.43.3.10861 allows SSRF via '/player/timeline'. An attacker using any X-Plex-Token value can include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination.

References