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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00287.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
agentverus agentverus-scanner unaffected
Version Status Constraints
0 affected ≤ 0.8.1

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Wed, 02 Sep 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title agentverus-scanner Companion Code Analysis Bypass via Excluded Python Bytecode
Weaknesses CWE-693
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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-02T16:59:50.188Z

Reserved: 2026-09-02T10:19:32.992Z

Link: CVE-2026-84811

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-02T17:18:05.447

Modified: 2026-09-02T17:18:05.447

Link: CVE-2026-84811

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T11:30:03Z

Weaknesses