Plex · Media Server
CVE-2026-96656
Plex Media Server arbitrary file write
O que é
Plex Media Server before 1.43.3.10861 allows an admin user to write arbitrary files that may be executed on load. The preference TranscoderH264Options is appended verbatim to x264's option string on every transcode. At startup, all .so files are run without signature, execute bit, or symbol checks.
CISA: Plex Media Server contains an external control of file name or path vulnerability which can allow an admin user to write arbitrary files that may be executed on load. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96654, and CVE-2026-96655.
O que fazer
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.
Prazo para as agências federais dos EUA: 23 de outubro de 2026
Mais falhas exploradas de Plex
| Adicionado | Vulnerabilidade | Produto | Gravidade | Chance de ataque |
|---|---|---|---|---|
| 20 de out. de 2026 | Server-Side Request Forgery (SSRF) | Media Server | Média 5,3 | 1,8% |
| 20 de out. de 2026 | Improper Neutralization of Encoded URI Schemes in a Web Page | Media Server | Média 6,9 | 1,9% |
| 20 de out. de 2026 | Server-Side Request Forgery (SSRF) | Media Server | Média 5,3 | 1,6% |
| 10 de mar. de 2023 | Remote Code Execution | Media Server | Alto 7,2 | 73% |
Fontes: Known Exploited Vulnerabilities (CISA, domínio público), CVE records (cve.org) e EPSS (FIRST). A chance de ataque é a estimativa EPSS de que alguém tente explorar a falha nos próximos 30 dias.