CVE-2026-96655
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Authenticated SSRF in Plex Media Server via Transcode Path Parameter

Publication date: 2026-09-23

Last updated on: 2026-09-23

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

Description
Plex Media Server before 1.43.3.10861 allows an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter.

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Meta Information

Published
2026-09-23
Last Modified
2026-09-23
Generated
2026-09-23
AI Q&A
2026-09-23
EPSS Evaluated
N/A
NVD
CVE-2026-96655
EUVD
EUVD-2026-85369

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
plex media_server to 1.43.3.10861 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability in Plex Media Server before version 1.43.3.10861 allows an authenticated user to send requests to arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter. This could enable unauthorized access or data exfiltration.

Impact Analysis

An attacker could exploit this to access internal systems, steal sensitive data, or perform actions on behalf of the authenticated user. It may lead to unauthorized network reconnaissance or further attacks.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection principles or HIPAA's security requirements. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update Plex Media Server to version 1.43.3.10861 or later to address the vulnerability.

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