CVE-2026-84811
agentverus-scanner Companion Code Analysis Bypass via Excluded Python Bytecode
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 2, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 2, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | 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 | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-693 Protection Mechanism Failure
Affected Products
| Product | Versions |
|---|---|
agentverus-scanneragentverus |
|
References
- GitHub Issue #27issue-tracking
- https://github.com/agentverus/agentverus-scanner/blob/v0.8.1/src/scanner/companion-code.tstechnical-description
- https://github.com/agentverus/agentverus-scanner/blob/v0.8.1/src/scanner/analyzers/semantic.tstechnical-description
- https://github.com/agentverus/agentverus-scannerproduct
- VulnCheck Advisory: agentverus-scanner Companion Code Analysis Bypass via Excluded Python Bytecodethird-party-advisory
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