Plex Media Server (PMS) 1.41.7.x through 1.42.0.x before 1.42.1 is affected by incorrect…
Priority MEDIUM 40CWE-669Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00596 48th percentileScored 2026-11-07
Fix Fixed Media Server (Plex): 1.42.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Media Server (Plex) Fixed in 1.42.1
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34158
- 2026-10-03 Alias added: GHSA-7wp3-3rr7-485g
References
Other 7
- 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://github.com/lufinkey/vulnerability-research/tree/main/CVE-2025-34158
- https://github.com/lufinkey/vulnerability-research/blob/main/CVE-2025-34158/README.md
More Plex vulnerabilities
- TI-2026-63829 Arbitrary file write in Plex Media Server enables code execution KEVCVSS 4.0HIGH 8.6
- TI-2020-04669 Deserialization of untrusted data in Plex Media Server KEVCVSS 3.1HIGH 7.2
- TI-2026-63827 Plex Media Server URL injection lets attackers call other plugins KEVCVSS 4.0MEDIUM 6.9
- TI-2026-63828 Server-side request forgery in Plex Media Server KEVCVSS 4.0MEDIUM 5.3
- TI-2026-63826 Server-side request forgery in Plex Media Server KEVCVSS 4.0MEDIUM 5.3
- TI-2025-42857 Incorrect authorization in Plex Media Server CVSS 3.1HIGH 8.5
Sources
- CVE-2025-34158 · CVE Program
- CVE-2025-34158 · NVD
- FIRST EPSS
- GHSA-7wp3-3rr7-485g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences