---
id: CVE-2026-84811
title: >-
  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
summary: >-
  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 execu…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-693
published: '2026-09-02'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:43.957'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84811'
references:
  - url: 'https://github.com/agentverus/agentverus-scanner'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/agentverus/agentverus-scanner/blob/v0.8.1/src/scanner/analyzers/semantic.ts
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/agentverus/agentverus-scanner/blob/v0.8.1/src/scanner/companion-code.ts
    label: disclosure@vulncheck.com
  - url: 'https://github.com/agentverus/agentverus-scanner/issues/27'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/agentverus-scanner-companion-code-analysis-bypass-via-excluded-python-bytecode
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00515
epssPercentile: 0.41398
ingestedAt: '2026-09-23T17:28:14.820Z'
vendor: agentverus
product: agentverus-scanner
affected:
  - agentverus-scanner <= 0.8.1
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-03T14:09:09.167283Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.