CVE-2026-84809

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

Published Sep 2, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Tencent aig-skill-scan
Vendors & Products Tencent aig-skill-scan
Type Values Removed Values Added
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.
Title Tencent AI-Infra-Guard skill-scan Analysis Bypass via Excluded Python Bytecode
First Time appeared Tencent
Tencent ai-infra-guard
Weaknesses CWE-693
CPEs cpe:2.3:a:tencent:ai-infra-guard:*:*:*:*:*:*:*:*
cpe:2.3:a:tencent:ai-infra-guard:4.6.0:*:*:*:*:*:*:*
Vendors & Products Tencent
Tencent ai-infra-guard
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 24, 2026, 2:20 PM
Reserved
Sep 2, 2026, 10:19 AM
Status
Deferred
Published
Sep 2, 2026, 5:18 PM
Modified
Sep 24, 2026, 8:43 PM