CVE-2026-84809

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

Published: Sep 2, 2026Updated: Sep 4, 2026 Sources: CVE List NVDCWE-693

6.5MEDIUM

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:HIntegrity

High

A:NAvailability

None

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Weaknesses

CWE-693

Affected Products

Tencent

commercial·CNaka tencent wechat, tencent hunyuan

AI-Infra-GuardMixed

Communications / messaging-chat

aig-skill-scanMixed

Communications / messaging-chat

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/Tencent/AI-Infra-Guard

github.com

https://github.com/Tencent/AI-Infra-Guard/blob/v4.6.0/skill-scan/skill_scan/tools/dir/dir_actions.py

github.com

https://github.com/Tencent/AI-Infra-Guard/blob/v4.6.0/skill-scan/skill_scan/utils/pre_scan.py

github.com

and 3 more references View all →

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