Summary
debugmcp/mcp-debugger v2026-03-19 was classified as CRITICAL RISK with a risk score of 826. Sigil detected 69 findings across 767 files, covering phases including provenance, install hooks, code patterns, network exfiltration. Review the findings below before installing this package.
Package description: LLM-driven debugger server – give your AI agents step-through debugging superpowers
v2026-03-19
20 March 2026, 00:08 UTC
by Sigil Bot
Risk Score
826
Findings
69
Files Scanned
767
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
repo/docs/development/setup-guide.md:39
3. **Rust toolchain** - For Rust debugging
- Install via rustup: `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
- CodeLLDB auto-downloads during `pnpm install`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
repo/docs/development/setup-guide.md:325
# Install nvm
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
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
repo/docs/rust-debugging.md:10
```bash
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
```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-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
repo/package.json:22
"prepare": "husky",
"postinstall": "pnpm run vendor:adapters",
"vendor": "pnpm run vendor:adapters",Why was this flagged?
npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.
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