Media Server vulnerabilities

7 known vulnerabilities in Media Server from Plex. 4 are rated high or critical, and 5 have been exploited in real attacks. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 7.2 High severity

  Plex Media Server External Control of File Name or Path Exploited

  CVE-2026-96656Sep 23, 2026PlexEPSS 19.8%

  Plex Media Server before 1.43.3.10861 allows an admin user to write arbitrary files that may be executed on load. The preference TranscoderH264Options is appended verbatim to x264's option string on every transcode. At startup, all .so files are run without si

• 4.3 Medium severity

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

  CVE-2026-96655Sep 23, 2026PlexEPSS 10.7%

  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.

• 6.5 Medium severity

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

  CVE-2026-96654Sep 23, 2026PlexEPSS 12.7%

  Plex Media Server before 1.43.3.10861 does not correctly neutralize URL values included in 'searchOne,' allowing an attacker to call other plugins' functions and supply their own parameters.

• 4.3 Medium severity

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

  CVE-2026-96652Sep 23, 2026PlexEPSS 11.9%

  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.

• 7.1 High severity

  Media Server: Operation on a Resource after Expiration or Release

  CVE-2025-69415Jan 2, 2026Plex

  In Plex Media Server (PMS) through 1.42.2.10156, ability to access /myplex/account with a device token is not properly aligned with whether the device is currently associated with an account.

• 8.5 High severity

  Media Server: Incorrect Resource Transfer Between Spheres

  CVE-2025-34158Aug 21, 2025Plex

  Plex Media Server (PMS) 1.41.7.x through 1.42.0.x before 1.42.1 is affected by incorrect resource transfer between spheres because /myplex/account provides the credentials of the server owner (and a /api/resources call reveals other servers accessible by that

• 7.2 High severity

  Plex Media Server Remote Code Execution Exploited

  CVE-2020-5741May 8, 2020Plex Media Server (Windows)EPSS 72.9%

  Deserialization of Untrusted Data in Plex Media Server on Windows allows a remote, authenticated attacker to execute arbitrary Python code.