CVE-2025-34158
published 2025-08-21CVE-2025-34158: 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…
PriorityP349high8.5CVSS 3.1
AVNACLPRLUINSCCHILAN
EPSS
0.59%
48.0th percentile
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).
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| msrc | azl3_gcc_13.2.0-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_golang_1.23.9-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_golang_1.24.3-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_python-tensorboard_2.16.2-6_on_azure_linux_3.0 | — | — |
| msrc | azl3_tensorflow_2.16.1-9_on_azure_linux_3.0 | — | — |
| msrc | cbl2_gcc_11.2.0-8_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_golang_1.18.8-6_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_golang_1.18.8-7_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_golang_1.22.7-3_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_msft-golang_1.24.1-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_tensorflow_2.11.1-2_on_cbl_mariner_2.0 | — | — |
| plex | media_server | >= 1.41.7.x < 1.42.1 | 1.42.1 |
CVSS provenance
nvdv3.18.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
vendor_msrc7.5HIGH
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GHSA
GHSA-7wp3-3rr7-485g: Plex Media Server (PMS) versions 1
ghsa_unreviewed·2025-08-21
CVE-2025-34158 [CRITICAL] CWE-20 GHSA-7wp3-3rr7-485g: Plex Media Server (PMS) versions 1
Plex Media Server (PMS) versions 1.41.7.x through 1.42.0.x are affected by an unspecified security vulnerability reported via Plex’s bug bounty program. While technical details have not been publicly disclosed, the issue was acknowledged by the vendor and resolved in version 1.42.1. The vulnerability may have posed a risk to system integrity, confidentiality, or availability, prompting a strong recommendation for all users to upgrade immediately.
Microsoft
Stack exhaustion in Parse in go/build/constraint
vendor_msrc·2024-09-10·CVSS 7.5
CVE-2024-34158 [HIGH] CWE-674 Stack exhaustion in Parse in go/build/constraint
Stack exhaustion in Parse in go/build/constraint
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Go: Go
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.co
No detection rules found.
No public exploits indexed.
Hackernews
Plex Urges Immediate Updates After Patching Multiple Undisclosed Security Flaws
blogs_hackernews·2026-09-04·CVSS 8.5
CVE-2025-34158 [HIGH] Plex Urges Immediate Updates After Patching Multiple Undisclosed Security Flaws
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## Plex Urges Immediate Updates After Patching Multiple Undisclosed Security Flaws
Plex is urging users to update their instances to the latest version following the release of an update that patches multiple security flaws.
The fixes are available in Plex Media Server 1.43.3 and Plex Desktop 1.115.0. The streaming media service did not elaborate on what those issues are, but said CVE identifiers have been requested for them.
"We recommend all server owners and Desktop users update to the latest version as soon as possible," Plex said in an announcement this week. "If you're running Plex Media Server on a NAS device, the updat
Bleepingcomputer
Plex warns users to patch security vulnerability immediately
blogs_bleepingcomputer·2025-08-15·CVSS 8.5
CVE-2025-34158 [HIGH] Plex warns users to patch security vulnerability immediately
## Plex warns users to patch security vulnerability immediately
## Sergiu Gatlan
Update August 22, 03:57 EDT: This Plex Media Server vulnerability is now tracked as CVE-2025-34158, and it has been rated as maximum severity by VulnCheck .
Plex has notified some of its users on Thursday to urgently update their media servers due to a recently patched security vulnerability.
The company has yet to assign a CVE-ID to track the flaw and didn't provide additional details regarding the patch, only saying that it impacts Plex Media Server versions 1.41.7.x to 1.42.0.x.
Yesterday, four days after releasing security updates that addressed the mysterious security bug, Plex emailed those running affected versions to update their software as soon as possible.
"We recently received a report via ou
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/250294https://www.vulncheck.com/advisories/plex-media-server-unspecified
2025-08-21
Published