Risk Letters

Exploited vulnerability

CVE-2026-96654

TLP:CLEAR

Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability

Plex Media Server contains an improper neutralization of encoded URI schemes in a web page vulnerability that could allow an attacker to call other plugins' functions and supply their own parameters. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96655, and CVE-2026-96656.

Facts

  • Vendor: Plex
  • Product: Media Server
  • CVSS: 6.9
  • EPSS (probability of exploitation within 30 days): 1.9 %
  • On CISA's Known Exploited Vulnerabilities list since: 20 October 2026
  • First known exploitation: 18 October 2026
  • CISA's deadline for US federal agencies: 23 October 2026
  • Weakness: CWE-84
  • First seen by Risk Letters: 20 October 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

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