CVE-2026-84811

Description

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.

CVSS Vector

References

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