CVE-2026-96652

Analyzed Analyzed - Analysis Complete

Server-Side Request Forgery in Plex Media Server

Publication date: 2026-09-23

Last updated on: 2026-09-29

Assigner: Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

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.

CVSS Scores

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Meta Information

Published

2026-09-23

Last Modified

2026-09-29

Generated

2026-10-14

AI Q&A

2026-09-23

EPSS Evaluated

2026-10-12

NVD

CVE-2026-96652

EUVD

EUVD-2026-85367

Affected Vendors & Products

Vendor	Product	Version / Range
plex	media_server	to 1.43.0.10861 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

Plex Media Server before version 1.43.3.10861 has a Server-Side Request Forgery (SSRF) vulnerability in the '/player/timeline' endpoint. An attacker with a valid X-Plex-Token can manipulate the 'protocol' parameter to include a full URL, forcing the server to send a POST request to an external destination of the attacker's choice.

Detection Guidance

Detecting this SSRF vulnerability in Plex Media Server requires checking for outdated versions and monitoring network requests to the '/player/timeline' endpoint. Ensure your Plex Media Server is updated to version 1.43.3.10861 or later. Inspect server logs for unusual POST requests to external URLs from internal tokens.

Impact Analysis

This vulnerability allows an attacker to make the Plex server interact with internal or external systems, potentially accessing sensitive data, bypassing firewalls, or initiating unauthorized actions. It could lead to data leaks or further network compromise if exploited.

Compliance Impact

This vulnerability allows server-side request forgery (SSRF) via the '/player/timeline' endpoint, enabling an attacker to force the Plex server to send POST requests to arbitrary destinations using any valid X-Plex-Token. This could lead to unauthorized data exfiltration or interaction with internal systems, potentially violating data protection requirements under GDPR and HIPAA if sensitive media or user data is exposed.

Mitigation Strategies

Update Plex Media Server to version 1.43.3.10861 or later to address the SSRF vulnerability in the '/player/timeline' endpoint.

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