Medium severity · published Sep 23, 2026
CVE-2026-96655
Plex Media Server arbitrary-host SSRF
In wildKEV
4.3
CVSS
1.6%
EPSS
Yes
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildYes
CISA KEVListed Oct 20, 2026
Federal remediation dueNov 3, 2026
Ransomware campaign useNot known
Affected products
Which versions
MS
Media Server · Plex
before 1.43.3.10861 · source: vendor, NVD, KEV
In the news
AdvisoryHigh
CISA Adds Six Known Exploited Vulnerabilities to Catalog
CISA has added six new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.
CVE-2026-96652 Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
CVE-2026-96654 Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability
CVE-2026-96655 Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
CVE-2026-96656 Plex Media Server External Control of File Name or Path Vulnerability
CVE-2026-106931 EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability
CVE-2026-110936 Siemens Software Center Uncontrolled Search Path Element Vulnerability
These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.
Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations fo...
Oct 20, 2026·CISA Advisories
VulnerabilityHigh
[CISA KEV] CVE-2026-96655: Plex Media Server - Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
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.
MSMedia ServerCVE-2026-96655
Oct 20, 2026·CISA KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-96655
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-96655
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
third-party-advisory
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json
release-notes
https://forums.plex.tv/t/plex-media-server/30447/711
vdb-entry
https://www.cve.org/CVERecord?id=CVE-2026-96655
third-party-advisory
https://zmain.info/blog/plex2shell
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In Plex Media Server 1.13.2.5154, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External Entity Processing (XXE) attack
