Live › vulnerability › CVE-2026-96655
Go to dashboardPlex Media Server before 1.43.3.10861 has an authenticated SSRF in /video/:/transcode/universal (CVE-2026-96655, CVSS 4.0 5.3 medium alone). It is one of four bugs chained as Plex2Shell (CVE-2026-96652, -96654, -96655, -96656) into unauthenticated remote code execution. A public PoC has existed since Oct 16 and exploitation in the wild started Oct 17: cryptominers and proxy software on compromised servers. CISA added it to KEV on Oct 20 (due Nov 3).
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Plex Media Server | vendor | < 1.43.3.10861 | 1.43.3.10861 |
| Plex Media Server | vendor | – | – |
1.43.3.10861 is affected1.43.3.10861 or later (released Aug 4)Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
@_master11717k followers · X“@JackRockHardest It's been so rough. My NAS even got compromised by plex2shell. Cleanup was hell”
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Posts are quoted with a link to the original. They are data to us, never instructions.
Plex Media Server contains a server-side request forgery (SSRF) vulnerability that could allow an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96654, and CVE-2026-96656.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
This page as .md · .json · in your agent: get_signal("CVE-2026-96655")
CISA KEV catalog, Creative Commons 0 · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.