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πŸ›‘οΈ Sentinel: [CRITICAL] Fix command injection in SSH client execution - #225

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πŸ›‘οΈ Sentinel: [CRITICAL] Fix command injection in SSH client execution#225
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sentinel-ssh-command-injection-fix-8729641557807688720

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@bobdivx bobdivx commented Aug 22, 2026

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Fixed a critical command injection vulnerability in src/lib/forge-infra-client.ts where SSH commands were dynamically constructed and passed to execSync().

Refactored execution to use execFileSync and pass arguments as an array to prevent shell interpolation, completely neutralizing the injection threat while maintaining full compatibility with both the native ssh branch and the Node fallback ssh2 branch. Cleaned up unused local variables that became obsolete during the refactor to satisfy strict TS/ESLint checks. Documented findings in .jules/sentinel.md. All automated tests and static checks pass cleanly.


PR created automatically by Jules for task 8729641557807688720 started by @bobdivx

🚨 Severity: CRITICAL
πŸ’‘ Vulnerability: Command injection vulnerability in the SSH client due to dynamic shell command construction passed to `execSync`.
🎯 Impact: An attacker could potentially inject malicious shell commands on the host system running the Node process if they can manipulate the command being executed.
πŸ”§ Fix: Refactored `exec()` to use `execFileSync` with argument arrays, preventing local shell interpolation. Cleaned up unused variables to satisfy strict linter checks.
βœ… Verification: Run `pnpm test` and `pnpm run check` to ensure no regressions.

Co-authored-by: bobdivx <6737167+bobdivx@users.noreply.github.com>
@google-labs-jules

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