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  4. CVE 2026 84809 tencent ai infra guard skill scan analysis bypass
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Back to active CVEs
High · CVSS 7.1CVE-2026-84809

Tencent AI-Infra-Guard skill-scan Analysis Bypass via Excluded Python BytecodeCVE-2026-84809

Answer in brief

CVE-2026-84809 records a High severity (CVSS 7.1) vulnerability in Tencent AI-Infra-Guard skill-scan Analysis Bypass via Excluded Python Bytecode. The current sources do not mark it as known exploited. The current feed maps Tencent/aig-skill-scan (generic), Tencent/aig-skill-scan (generic), Tencent/AI-Infra-Guard (generic), Tencent/AI-Infra-Guard (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 2, 2026Updated Sep 24, 2026Source checked Oct 18, 2026First seen by HOL Sep 2, 2026Material review Sep 24, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Tencent/aig-skill-scan (generic), Tencent/aig-skill-scan (generic), Tencent/AI-Infra-Guard (generic), Tencent/AI-Infra-Guard (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Tencent/aig-skill-scangeneric0Not reported
Tencent/aig-skill-scangeneric>=0 <=0.2.1Not reported
Tencent/AI-Infra-Guardgeneric>=0 <4.5.2 || 4.6.04.5.2
Tencent/AI-Infra-Guardgeneric>=0 <4.5.2 || >=4.6.0 <=4.6.04.5.2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Tencent/aig-skill-scan, Tencent/aig-skill-scan, Tencent/AI-Infra-Guard.
  2. 2Review the reported fix. Update Tencent/AI-Infra-Guard to 4.5.2; Tencent/AI-Infra-Guard to 4.5.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 24, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 2, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-693
Source
CVE List V5
Source checked
Oct 18, 2026
References
6 linked sources
Open source record