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🛡️ Sentinel: [CRITICAL] Fix command injection risk - #30

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sentinel/fix-command-injection-7636764894221269545
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connerkup wants to merge 1 commit into
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sentinel/fix-command-injection-7636764894221269545

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@connerkup

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🚨 Severity: CRITICAL
💡 Vulnerability: Used execSync with a dynamically constructed string (node --check "${tempFile}") which opens up command injection vulnerabilities if tempFile contained malicious spaces or commands. Similar test mocks in loop.test.ts also used execSync directly with shell strings.
🎯 Impact: An attacker could potentially inject malicious shell commands via file names or paths, executing arbitrary commands with the privileges of the application.
🔧 Fix: Replaced execSync with spawnSync, providing the command executable (process.execPath) as the first argument, and an array of arguments, completely bypassing the system shell and command injection risks. Additionally, error handling was added for the spawnSync results to mimic the failure-throwing semantics that execSync previously provided.
✅ Verification: npm run lint and npm test successfully completed. Tested the failure modes of spawnSync appropriately.


PR created automatically by Jules for task 7636764894221269545 started by @connerkup

Co-authored-by: connerkup <72580335+connerkup@users.noreply.github.com>
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Deploying shielded-shell with  Cloudflare Pages  Cloudflare Pages

Latest commit: eca404a
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Preview URL: https://20172da1.shielded-shell.pages.dev
Branch Preview URL: https://sentinel-fix-command-injecti-oefp.shielded-shell.pages.dev

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The latest updates on your projects. Learn more about Vercel for GitHub.

Project Deployment Actions Updated
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Preview — eca404a7 Deployed Oct 28, 2026 by vercel[bot]
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