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CVE

CWE

Training

CVE-2025-34158

Published: Aug 21, 2025

Modified: Jan 2, 2026

PUBLISHED

CVSS v3.1

8.5

HIGH

Description

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).

Vendor	Product	Versions
Plex	Media Server	affected `1.41.7.x - < 1.42.1`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

References

https://www.plex.tv/media-server-downloads/

https://forums.plex.tv/t/plex-media-server-security-update/928341

https://www.bleepingcomputer.com/news/security/plex-warns-users-to-patch-security-vulnerability-immediately/

https://www.runzero.com/blog/plex/

https://www.tenable.com/plugins/nessus/250294

https://www.vulncheck.com/advisories/plex-media-server-unspecified

https://github.com/lufinkey/vulnerability-research/tree/main/CVE-2025-34158

https://github.com/lufinkey/vulnerability-research/blob/main/CVE-2025-34158/README.md

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