Summary
numasec v4.1.5 was classified as CRITICAL RISK with a risk score of 1614.5. Sigil detected 113 findings across 161 files, covering phases including provenance, install hooks, network exfiltration, code patterns, obfuscation. Review the findings below before installing this package.
Package description: AI-powered penetration testing via MCP — 21+ security scanners, PTES methodology, multi-provider
v4.1.5
10 April 2026, 17:13 UTC
by Sigil Bot
Risk Score
1614.5
Findings
113
Files Scanned
161
Provenance
Findings by Phase
Phase Ordering
Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
numasec-4.1.5/install.sh:3
# numasec installer
# Usage: curl -fsSL https://numasec.dev/install | bash
# Local: bash install.sh --localWhy was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
numasec-4.1.5/install.sh:84
info "Installing Bun..."
curl -fsSL https://bun.sh/install | bash
export PATH="$HOME/.bun/bin:$PATH"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
numasec-4.1.5/install.sh:101
info "Installing uv (Python package manager)..."
curl -LsSf https://astral.sh/uv/install.sh | sh
export PATH="$HOME/.local/bin:$PATH"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
numasec-4.1.5/numasec/launcher.py:187
f" Alternatives:\n"
f" curl -fsSL https://raw.githubusercontent.com/{GITHUB_REPO}/main/install.sh | bash\n"
f" numasec --mcp (MCP server mode, no TUI)"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
numasec-4.1.5/numasec/tools/composite_injection.py:59
setup_raw = await python_oob_setup()
setup_data = json.loads(setup_raw) if isinstance(setup_raw, str) else setup_rawWhy was this flagged?
This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.
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