Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Plex Media Server
Default version status: unknown
0 to < 1.43.3.10861affected1.43.3.10861unaffected
References
- https://forums.plex.tv/t/plex-media-server/30447/711 ↗
- https://www.cve.org/CVERecord?id=CVE-2026-96656 ↗
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json ↗
- https://zmain.info/blog/plex2shell ↗
- https://www.boredhackerblog.info/2026/10/plex-vulnerabilities-being-exploited-in.html ↗
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96656 ↗