MEDIUM · CVSS 5.3
ACTIVELY EXPLOITED
PATCH AVAILABLE
CVE-2026-96655: Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
| Vendor | Plex |
|---|---|
| Product | Media Server |
| CVSS score | 5.3 · CVSS 4.0 · MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| EPSS | 10.7% (percentile 96) |
| Actively exploited | Yes |
| Added to CISA KEV | 20 Oct 2026 |
| CISA federal deadline | 3 Nov 2026 |
| Weakness (CWE) | CWE-918 |
| NVD published | 23 Sep 2026 |
| NVD last modified | 21 Oct 2026 |
| NVD status | Analyzed |
Affected versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Plex Media Server | before 1.43.3.10861 | 1.43.3.10861 |
Required action (CISA's text)
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.
Description (NVD)
Plex Media Server before 1.43.3.10861 allows an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter.
SOURCES
Other Plex flaws
- CVE-2026-96656: Plex Media Server External Control of File Name or Path Vulnerability
- CVE-2026-96654: Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability
- CVE-2026-96652: Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
- CVE-2020-5741: Plex Media Server Remote Code Execution Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 21 Oct 2026.