🛡️ Sentinel: [MEDIUM] Fix information disclosure in upload API

[GerryK97]

🚨 Severity: MEDIUM
💡 Vulnerability: The /api/upload endpoint was returning detailed configuration errors (which env vars are missing) and detailed Cloudinary internal error objects directly to the client via its JSON response.
🎯 Impact: This leaks sensitive internal server configuration status and third-party service internals to any client hitting the endpoint, slightly increasing the attack surface.
🔧 Fix: We now catch these detailed errors and log them exclusively on the server backend (using console.error) but we return a safe, sanitized generic error message to the client (e.g. Server configuration error or Failed to upload image).
✅ Verification: Review the code for src/app/api/upload/route.ts and verify that the NextResponse.json calls only return static sanitized string values instead of the errorDetails object.

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PR created automatically by Jules for task 7768493716577987353 started by @GerryK97

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Project	Deployment	Actions	Updated (UTC)
prostream-auction	Error		May 24, 2026 4:47am

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