Summary
claude-code-skill-security-check v2.5.1 was classified as CRITICAL RISK with a risk score of 681. Sigil detected 50 findings across 31 files, covering phases including code patterns, install hooks, network exfiltration, obfuscation. Review the findings below before installing this package.
v2.5.1
22 March 2026, 13:30 UTC
by Sigil Bot
Risk Score
681
Findings
50
Files Scanned
31
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
package/README.md:144
| `mcp-response-inspector.mjs` | Inspects MCP tool responses for embedded prompt injection, exfiltration payloads, and elicitation abuse before they reach the agent |
| `validate-bash.sh` | Intercepts Bash commands and blocks patterns matching `curl \| bash`, `rm -rf /`, `bypassPermissions`, and other Tier 1 dangerous operations |
| `ghost-file-detector.sh` | Detects AI-generated "ghost files" — similarly-named copies (e.g., `utils2.py`) created instead of editing the original, a common AI codinWhy 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
package/SKILL.md:178
- `eval()`, `exec()`, `os.system()`, `subprocess.call(shell=True)`
- Piped script execution: `curl | bash`, `curl | sh`, `wget | sh`, `iex (iwr ...)`
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
package/hooks/README.md:153
| 3 | Git mass staging | MEDIUM | `git add -A`, `git add .`, `git add --all` |
| 4 | Piped script execution | HIGH | `curl \| bash`, `wget \| sh` |
| 5 | HTTP exfiltration bypass | HIGH | `python -c "import requests"`, `node -e "fetch(...)"` |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
package/skills/security-check/SKILL.md:178
- `eval()`, `exec()`, `os.system()`, `subprocess.call(shell=True)`
- Piped script execution: `curl | bash`, `curl | sh`, `wget | sh`, `iex (iwr ...)`
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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