CVE-2026-96654
Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-10-20. Federal due date: 2026-10-23.
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.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Plex | Media Server | before 1.43.3.10861 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://forums.plex.tv/t/plex-media-server/30447/711
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json
- https://www.cve.org/CVERecord?id=CVE-2026-96654
- https://zmain.info/blog/plex2shell
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96654