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CVE-2026-84809

Tencent AI-Infra-Guard skill-scan Analysis Bypass via Excluded Python Bytecode

CVSS 4.0 7.1 HIGHCVSS 3.1 6.5 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-84809

Published

Tencent AI-Infra-Guard's skill-scan component excludes compiled Python bytecode files from analysis by hardcoding __pycache__ directories and .pyc/.pyo/.pyd extensions into skip lists across multiple scanning surfaces. Attackers can distribute skills with benign Python source files alongside malicious compiled bytecode that executes on import while the scanner reports a safe verdict, enabling code execution when operators install the skill.

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Affected versions, risk and source history

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CVE-2026-84809 · CVE overview and exploitation status

cve-program · CVE-2026-84809

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