🛡️ Sentinel: [CRITICAL] Fix Path Traversal in Directory.GetFiles pattern

[mleem97]

🚨 Severity: CRITICAL
💡 Vulnerability: Path Traversal via unvalidated searchPattern argument in Directory.GetFiles inside GregIoLuaModule.cs's list_files function. A malicious Lua script or user could pass a pattern like ../secret/* to enumerate files outside the intended dataDir sandbox.
🎯 Impact: Allows arbitrary directory enumeration and potential exposure of sensitive file paths outside the sandbox boundaries.
🔧 Fix: Added validation to the pattern argument to ensure it does not contain directory traversal characters (..) or directory separators (/, \). If such characters are detected, it throws an UnauthorizedAccessException.
✅ Verification: Ran a local PoC confirming Directory.GetFiles resolves traversal patterns out of the base path, and executed the test suite to ensure the fix does not introduce regressions.

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PR created automatically by Jules for task 6235311121839553781 started by @mleem97

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 4 complexity · 0 duplication

Metric	Results
Complexity	4
Duplication	0

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[mleem97]

Superseded: same as #286 — current tree already blocks traversal via SanitizeSearchPattern + IsInsideSandbox. No merge needed.

[google-labs-jules]

Superseded: same as #286 — current tree already blocks traversal via SanitizeSearchPattern + IsInsideSandbox. No merge needed.

Understood. Acknowledging that this work is now obsolete as the current tree already blocks traversal via SanitizeSearchPattern and IsInsideSandbox. Stopping work on this task.