October 20, 2026 · Applied Cybernetics Group
CVE-2026-96654 Plex Media Server
Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability
- Added to KEV
2026-10-20- Federal due date
2026-10-23- Vendor
- Plex
- Product
- Media Server
- EPSS
- 80.3th percentile (score 0.019, as of
2026-11-06) - NVD CVSS v3.1
- 6.5 (MEDIUM)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-96654
CISA short description
Plex Media Server contains an improper neutralization of encoded URI schemes in a web page vulnerability that could allow an attacker to call other plugins' functions and supply their own parameters. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96655, and CVE-2026-96656.
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.
NVD description
Plex Media Server before 1.43.3.10861 does not correctly neutralize URL values included in 'searchOne,' allowing an attacker to call other plugins' functions and supply their own parameters.