Risk Letters

Exploited vulnerability

CVE-2026-96655

TLP:CLEAR

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

Plex Media Server contains a server-side request forgery (SSRF) vulnerability that could allow an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96654, and CVE-2026-96656.

Facts

  • Vendor: Plex
  • Product: Media Server
  • CVSS: 5.3
  • EPSS (probability of exploitation within 30 days): 1.6 %
  • On CISA's Known Exploited Vulnerabilities list since: 20 October 2026
  • First known exploitation: 18 October 2026
  • CISA's deadline for US federal agencies: 3 November 2026
  • Weakness: CWE-918
  • First seen by Risk Letters: 20 October 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD