SSRF in Plex Media Server
CVE-2026-96652
Plex Media Server before 1.43.3.10861 allows SSRF via '/player/timeline'. An attacker using any X-Plex-Token value can include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.119 (96.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.119 · change: +0.117
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- 9119a7d8-5eab-497f-8521-727c672e3725 (Third Party Advisory, third-party-advisory)
- 9119a7d8-5eab-497f-8521-727c672e3725 (release-notes, Release Notes)
- 9119a7d8-5eab-497f-8521-727c672e3725 (VDB Entry, Third Party Advisory, vdb-entry)
- 9119a7d8-5eab-497f-8521-727c672e3725 (Third Party Advisory, third-party-advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2026-96652?
- CVE-2026-96652 is a medium-severity vulnerability in Plex Media Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2026-09-23.
- How severe is CVE-2026-96652?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2026-96652 known to be exploited?
- Yes. CVE-2026-96652 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-10-20), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.