CVE Watch21 oct 2026

CVE-2026-96652

Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability

CVSS

4.3

Medio

EPSS

11.9%

p96

KEV

SÍ

20 oct 2026

Exploit Today

0-100

Publicado: 23 sept 2026 · Última mod.: 21 oct 2026 · CWE-918

EPSS · 30d

0.2%EPSS · 30 días11.9%

2026-10-102026-11-07

Ficha del catálogo KEV

Producto

Plex / Media Server

Vulnerabilidad

Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability

Añadido a KEV

20 oct 2026

Remediar antes de

3 nov 2026

Uso conocido en ransomware

Descripción resumida

Plex Media Server contains a server-side request forgery (SSRF) vulnerability which could allow an attacker using any X-Plex-Token value to include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination. This vulnerability can be chained with CVE-2026-96654, CVE-2026-96655, and CVE-2026-96656.

Acción requerida

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.

Notas

https://forums.plex.tv/t/important-security-update-for-plex-media-server-v1-43-2-and-earlier/942319 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-96652

Descripción técnica

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.

Referencias oficiales

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