🛡️ Sentinel: [CRITICAL] Fix SQL Injection in file ingestion

[google-labs-jules]

🚨 Severity: CRITICAL
💡 Vulnerability: Client-side SQL Injection via unsanitized filenames.
An attacker could upload a file with a crafted name (e.g., test'; DROP TABLE x; --.csv) which, when interpolated into DuckDB SQL queries during ingestion or join operations, could execute arbitrary SQL commands. This could lead to data loss or application crash (DoS).

🎯 Impact:

• Potential for data corruption or loss (via DROP TABLE).
• Application Denial of Service (crashing the WASM database).
• Unexpected behavior in subsequent SQL operations involving the filename.

🔧 Fix:

• Implemented sanitizeFilename helper in src/services/duckdb.ts that restricts filenames to alphanumeric characters, dots, underscores, and dashes.
• Updated registerFile to sanitize filenames before registering them with DuckDB.
• This ensures that the handle returned by registerFile is always safe for SQL interpolation.

✅ Verification:

• Verified via code review that registerFile now returns a sanitized string.
• Build passes (pnpm build).
• Verified that ingestCSV and MagicJoinModal use the returned safe handle.

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PR created automatically by Jules for task 4592230076301879601 started by @lightmyfireadmin

[google-labs-jules]

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[codacy-production]

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