CVE-2025-34158: high-severity vulnerability in Plex Media Server
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.5epss 0.6%
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 server owner).
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Affected products
Plex · Media ServerRelated CVEs — Plex Media Server
In the same product, most dangerous first.
CVE-2026-96652MEDIUMPlex Media Server SSRFEPSS 11.9%KEVCVE-2026-96655MEDIUMPlex Media Server arbitrary-host SSRFEPSS 10.7%KEVCVE-2026-96654MEDIUMPlex Media Server URL injectionEPSS 1.9%KEVCVE-2026-96656HIGHPlex Media Server arbitrary file writeEPSS 1.8%KEVCVE-2026-96651HIGHPlex Media Server path traversalEPSS 0.8%CVE-2025-69415HIGHCVE-2025-69415EPSS 0.3%
References
https://forums.plex.tv/t/plex-media-server-security-update/928341https://github.com/lufinkey/vulnerability-research/blob/main/CVE-2025-34158/README.mdhttps://github.com/lufinkey/vulnerability-research/tree/main/CVE-2025-34158https://www.bleepingcomputer.com/news/security/plex-warns-users-to-patch-security-vulnerability-immediately/https://www.plex.tv/media-server-downloads/https://www.runzero.com/blog/plex/https://www.tenable.com/plugins/nessus/250294