busybox-on-windows

Fail

Audited by Snyk on Apr 14, 2026

Risk Level: CRITICAL
Full Analysis

CRITICAL E005: Suspicious download URL detected in skill instructions.

  • Suspicious download URL detected (high risk: 1.00). They include direct links to Windows executables hosted on a third‑party domain (frippery.org) rather than an official, vetted package repository—direct .exe downloads from unverified sites are a high malware risk.

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

  • Third-party content exposure detected (high risk: 0.80). The skill's SKILL.md explicitly instructs downloading a BusyBox binary from a public site (Invoke-WebRequest to https://frippery.org/files/... in step 3), which causes the agent/user to fetch and execute untrusted third-party content that can materially change tool behavior.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

  • Potentially malicious external URL detected (high risk: 0.90). The skill instructs at runtime to download and run a BusyBox executable from https://frippery.org/files/busybox/busybox.exe (and variants busybox64.exe, busybox64u.exe, busybox64a.exe), which fetches and executes remote code that the skill relies upon.

Issues (3)

E005
CRITICAL

Suspicious download URL detected in skill instructions.

W011
MEDIUM

Third-party content exposure detected (indirect prompt injection risk).

W012
MEDIUM

Unverifiable external dependency detected (runtime URL that controls agent).

Audit Metadata
Risk Level
CRITICAL
Analyzed
Apr 14, 2026, 06:33 PM
Issues
3