Vulnerability Details CVE-2026-96656
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 31.5%
CVSS Severity
CVSS v3 Score 7.2
Products affected by CVE-2026-96656
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cpe:2.3:a:plex:media_server:-
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cpe:2.3:a:plex:media_server:0.9.9.2
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cpe:2.3:a:plex:media_server:1.13.2.5154
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cpe:2.3:a:plex:media_server:1.18.2.2029
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cpe:2.3:a:plex:media_server:1.18.2.2029-36236cc4c
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cpe:2.3:a:plex:media_server:1.19.1.2701
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cpe:2.3:a:plex:media_server:1.19.3
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cpe:2.3:a:plex:media_server:1.21
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cpe:2.3:a:plex:media_server:1.24.4.5081
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cpe:2.3:a:plex:media_server:1.25.0.5282
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cpe:2.3:a:plex:media_server:1.42.0.9975
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cpe:2.3:a:plex:media_server:1.42.1.10054
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cpe:2.3:a:plex:media_server:1.42.1.10060
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cpe:2.3:a:plex:media_server:1.42.2.10122
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cpe:2.3:a:plex:media_server:1.42.2.10156
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cpe:2.3:a:plex:media_server:1.43.0.10162
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cpe:2.3:a:plex:media_server:1.43.0.10231
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cpe:2.3:a:plex:media_server:1.43.0.10346
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cpe:2.3:a:plex:media_server:1.43.0.10389
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cpe:2.3:a:plex:media_server:1.43.0.10467
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cpe:2.3:a:plex:media_server:1.43.0.10492