Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Plex | Media Server | < 1.43.0.10861 |
Related Weaknesses (CWE)
References
- https://forums.plex.tv/t/plex-media-server/30447/711Release Notes
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-96656Third Party AdvisoryVDB Entry
- https://zmain.info/blog/plex2shellThird Party Advisory
FAQ
What is CVE-2026-96656?
CVE-2026-96656 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 e...
How severe is CVE-2026-96656?
CVE-2026-96656 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-96656?
Check the references section above for vendor advisories and patch information. Affected products include: Plex Media Server.