Summary
fs-mcp v1.32.0 was classified as CRITICAL RISK with a risk score of 1118. Sigil detected 108 findings across 167 files, covering phases including network exfiltration, install hooks, provenance, code patterns, obfuscation. Review the findings below before installing this package.
v1.32.0
21 March 2026, 08:06 UTC
by Sigil Bot
Risk Score
1118
Findings
108
Files Scanned
167
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-pip-setup-exec
CRITICALsetup.py executes code at install time
fs_mcp-1.32.0/.claude/get-shit-done/templates/phase-prompt.md:470
## User Setup (External Services)
Why 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.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
fs_mcp-1.32.0/src/fs_mcp/utils.py:65
'rtk': {
'Darwin': 'brew install rtk-ai/tap/rtk # or: curl -fsSL https://raw.githubusercontent.com/rtk-ai/rtk/refs/heads/master/install.sh | sh',
'Windows': 'cargo install --git https://github.com/rtk-ai/rtk # or download from https://github.com/rtk-ai/rtk/releases',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
fs_mcp-1.32.0/src/fs_mcp/utils.py:68
'Linux': {
'default': 'curl -fsSL https://raw.githubusercontent.com/rtk-ai/rtk/refs/heads/master/install.sh | sh # installs to ~/.local/bin # https://github.com/rtk-ai/rtk#installation',
},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.
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