Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
Plex Media Server contains a server-side request forgery (SSRF) vulnerability which could allow an attacker using any X-Plex-Token value to include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination. This vulnerability can be chained with CVE-2026-96654, CVE-2026-96655, 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
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Plex
- Product
- Media Server
- CVSS
- 4.3
- EPSS
- 0.018 (p79)
- CISA KEV
- added 20 Oct 2026, due 3 Nov 2026 (2d)
- Exploitation
- observed in the wild
- Fix
- available
- Weakness
- CWE-918
- Exposure class
- Collaboration
Why it ranks 65 (Critical)
- CISA KEV listed, remediation due 2026-11-03
- CVSS 4.3 medium
- Product class: collaboration
- Covered by 4 independent sources
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- Vendor advisory (forums.plex.tv)
- CVE-2026-96652 on this site · NVD · CVE.org · Vulnpedia · KEV
Related coverage
Other items that share a CVE or were clustered with this one.