CVE-2026-84811

MEDIUM 6.5

agentverus-scanner Companion Code Analysis Bypass via Excluded Python Bytecode

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

agentverus-scanner fails to analyze compiled Python bytecode files in companion code directories, allowing attackers to bypass security scanning by shipping malicious __pycache__ entries alongside benign source files. Attackers can execute arbitrary Python bytecode on import while the scanner reports a CERTIFIED verdict with high trust scores in both static and semantic analysis modes.

CWE	CWE-693
Vendor	agentverus
Product	agentverus-scanner
Published	Sep 2, 2026
Last Updated	Sep 24, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

agentverus / agentverus-scanner

0 ≤ 0.8.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/agentverus/agentverus-scanner/issues/27 github.com: https://github.com/agentverus/agentverus-scanner/blob/v0.8.1/src/scanner/companion-code.ts github.com: https://github.com/agentverus/agentverus-scanner/blob/v0.8.1/src/scanner/analyzers/semantic.ts github.com: https://github.com/agentverus/agentverus-scanner vulncheck.com: https://www.vulncheck.com/advisories/agentverus-scanner-companion-code-analysis-bypass-via-excluded-python-bytecode

Credits

nedlir