Caveat verdict
shellguard-scanner
A security scanner for detecting prompt injection and data exfiltration in OpenClaw skills using local bash scripts; a defensive tool with no suspicious behavior of its own.
⚠ Flagged for review — coarse, uncorroborated signal, not a confirmed exploit. Review the config yourself before installing.
Automated static analysis — not a human review. Caveat flags capabilities, not confirmed intent, and can produce false positives. Disagree with this verdict? Use Dispute below.
Findings (8)
Pipe to bash — executes piped content as shell commands
tests/fixtures/obfuscated-skill/SKILL.md · code · | bash
Accesses sensitive system files
scripts/shadow-detector.sh · prose · downgraded · /etc/passwd
Bash /dev/tcp — raw TCP connection via shell
scripts/shellguard-scanner.sh · prose · downgraded · /dev/tcp/
Uses exec() — may execute shell commands
tests/fixtures/obfuscated-skill/SKILL.md · code · exec(
Accesses .ssh directory
SKILL.md · prose · downgraded · .ssh/
Accesses system credential store
scripts/shellguard-scanner.sh · prose · downgraded · keychain
Instructs covert action — may act without user awareness
scripts/shellguard-scanner.sh · prose · downgraded · silently
subprocess execution — runs system commands from Python
tests/fixtures/exfil-skill/scripts/setup.py · prose · downgraded · subprocess.run(
Why the tier is capped
Execution sink present in raw bytes (Hard Floor: class A/B/D/F). Final tier capped at Caution — cannot be lifted by any downgrade, example-payload opt-in, or allowlist.
Permissions & capabilities
No declared permissions — minimal attack surface.
Is this flag fair?
Thanks — recorded.