Plex
External Control of File Name or Path Vulnerability
Exploited in the wild. CISA added it to its Known Exploited Vulnerabilities list on 20 Oct 2026.
CVE-2026-96656High8.6
Reading the vendor advisory
Black Shard's team can check your exposure to CVE-2026-96656 and take the fix off your plate.
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.
Black Shard's team can check your exposure, take a fix off your plate or step in on a live incident.
Chance of exploitation in the next 30 days
1.8%
EPSS score from FIRST
Updated 13 Nov 2026, 12:04 UTC, 31 of 36 sources answering.
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