fix security
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180
review/FIXES_APPLIED.md
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180
review/FIXES_APPLIED.md
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# Security & Functionality Fixes Applied
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**Date:** February 21, 2026
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## Summary of Fixes Applied
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### Critical Fixes (Fixed)
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#### 1. Webhook Signature Verification Buffer Length Check
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**File:** `server.js:15162-15170`
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**Issue:** `timingSafeEqual()` throws error if buffer lengths differ, potentially bypassing verification.
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**Fix:** Added buffer length comparison before calling `timingSafeEqual()`.
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```javascript
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const sigBuffer = Buffer.from(signature);
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const expectedBuffer = Buffer.from(expectedSignature);
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if (sigBuffer.length !== expectedBuffer.length || !require('crypto').timingSafeEqual(sigBuffer, expectedBuffer)) {
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// reject
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}
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```
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#### 2. Duplicate Variable Declaration in Webhook Handler
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**File:** `server.js:15253`
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**Issue:** `eventId` was declared twice in the same function scope, causing SyntaxError.
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**Fix:** Removed the duplicate declaration at line 15253.
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#### 3. Session Secret Auto-Generation with Persistence
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**File:** `server.js:390-420`
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**Issue:** Session secret was regenerated on each restart, invalidating all sessions.
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**Fix:** Session secret is now persisted to `generated-secrets.json` and reused on restart.
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```javascript
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const secretsFile = path.join(STATE_DIR, 'generated-secrets.json');
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// Load existing secret or generate and persist new one
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```
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#### 4. SQLCipher Key Validation
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**File:** `src/database/connection.js:18-29`
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**Issue:** SQLCipher key was only escaping quotes, not fully validating format.
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**Fix:** Added comprehensive key validation:
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- Minimum 32 characters
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- Must be hexadecimal only (0-9, a-f, A-F)
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```javascript
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function validateSqlcipherKey(key) {
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if (!key || typeof key !== 'string') throw new Error('...');
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if (key.length < 32) throw new Error('...');
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if (!/^[a-fA-F0-9]+$/.test(key)) throw new Error('...');
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return true;
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}
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```
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#### 5. JSON Body Size Limit in External API
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**File:** `src/external-admin-api/handlers.js:108-131`
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**Issue:** No size limit on JSON body parsing, potential memory exhaustion.
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**Fix:** Added `maxBodySize` parameter (default 6MB) with streaming size check.
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```javascript
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async function parseJsonBody(req, maxBodySize = 6 * 1024 * 1024) {
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// ... size tracking and rejection if exceeded
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}
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```
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### High Priority Fixes (Fixed)
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#### 6. CORS Headers
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**File:** `server.js:8940-8950`
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**Issue:** No explicit CORS configuration.
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**Fix:** Added comprehensive CORS headers to `sendJson()`:
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- `Access-Control-Allow-Origin`
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- `Access-Control-Allow-Methods`
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- `Access-Control-Allow-Headers`
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- `Access-Control-Allow-Credentials`
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#### 7. Pending Payment Session Cleanup
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**File:** `server.js:1130-1190`
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**Issue:** Pending payment sessions accumulate without cleanup.
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**Fix:** Added `cleanupStalePendingPayments()` function that:
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- Removes pending records older than 48 hours
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- Runs during periodic memory cleanup
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- Persists changes after cleanup
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#### 8. Builder State Debouncing
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**File:** `public/builder.js:19-46`
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**Issue:** Every property change triggered localStorage write (performance impact).
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**Fix:** Implemented debounced save with 500ms delay.
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```javascript
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let builderStateSaveTimer = null;
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function saveBuilderState(state) {
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pendingBuilderState = state;
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if (builderStateSaveTimer) clearTimeout(builderStateSaveTimer);
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builderStateSaveTimer = setTimeout(() => {
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localStorage.setItem(BUILDER_STATE_KEY, JSON.stringify(pendingBuilderState));
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}, 500);
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}
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```
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#### 9. Zip Extraction Symlink Protection
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**File:** `server.js:8950-8975`
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**Issue:** Extracted archives could contain symlinks pointing outside workspace.
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**Fix:** Added `scanForSymlinks()` function that removes symlinks after extraction.
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#### 10. Enhanced Environment Validation
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**File:** `server.js:20672-20720`
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**Issue:** Limited production environment checks.
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**Fix:** Enhanced validation with:
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- Critical variables check (DATABASE_ENCRYPTION_KEY added)
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- Recommended variables warnings
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- Better console output formatting
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### Medium Priority Fixes (Fixed)
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#### 11. Dangerous File Type Blocking in Zip Extraction
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**File:** `server.js:8922-8927`
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**Fix:** Added blocking of potentially dangerous file types:
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- `.exe`, `.bat`, `.cmd`, `.sh`, `.ps1`, `.vbs`
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## Files Modified
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1. `chat/server.js` - Main server file (multiple fixes)
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2. `chat/src/database/connection.js` - Database connection with SQLCipher validation
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3. `chat/src/external-admin-api/handlers.js` - JSON body size limit
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4. `chat/public/builder.js` - State persistence debouncing
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## Remaining Recommendations (Non-Critical)
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These are recommended but not critical for launch:
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### Post-Launch Items
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1. **OAuth State in Database** - Currently stored in memory, will be lost on restart/multi-instance
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2. **Atomic Token Operations** - Consider using database transactions for high-concurrency scenarios
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3. **2FA for Admin** - Add two-factor authentication requirement for admin accounts
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4. **IP-Based Admin Restrictions** - Consider limiting admin panel access by IP
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## Testing Performed
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- Webhook signature verification with various buffer lengths
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- Session persistence across simulated restarts
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- SQLCipher key validation with various formats
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- JSON body parsing with oversized payloads
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- Builder state persistence under rapid changes
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- Zip extraction with path traversal attempts
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## Verification Steps
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1. **Webhook Test:**
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```bash
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curl -X POST http://localhost:4000/webhooks/dodo \
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-H "dodo-signature: sha256_invalid" \
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-d '{"test": true}'
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# Should return 401, not crash
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```
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2. **Session Persistence Test:**
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- Start server
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- Login as user
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- Restart server
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- Verify session still valid
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3. **SQLCipher Test:**
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```bash
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# Valid key
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DATABASE_ENCRYPTION_KEY=0123456789abcdef0123456789abcdef node server.js
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# Invalid key should fail with clear error
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DATABASE_ENCRYPTION_KEY="invalid!key" node server.js
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```
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## Conclusion
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All critical and high-priority security and functionality issues have been addressed. The application is now ready for launch with the following improvements:
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- Robust webhook handling
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- Persistent session secrets
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- Validated SQLCipher keys
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- Protected JSON parsing
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- CORS support
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- Automatic cleanup of stale data
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- Better error handling and user feedback
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173
review/SECURITY_AND_FUNCTIONALITY_REVIEW.md
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173
review/SECURITY_AND_FUNCTIONALITY_REVIEW.md
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# Security & Functionality Review - Plugin Compass App
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**Review Date:** February 21, 2026
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**Reviewer:** Automated Security Analysis
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**App Location:** `/chat`
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**Status:** ✅ ALL CRITICAL ISSUES FIXED
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---
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## Executive Summary
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This application is a WordPress plugin builder with AI capabilities, payment processing (Dodo Payments), user authentication, and an admin panel. The codebase is substantial (~21,000+ lines in server.js) and handles sensitive operations including payments, user authentication, and AI model interactions.
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**Overall Risk Level:** ✅ LOW (After Fixes)
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All critical and high-priority issues have been addressed. See `FIXES_APPLIED.md` for detailed implementation notes.
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---
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## Critical Issues - ✅ ALL FIXED
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### 1. Webhook Signature Verification Buffer Length Mismatch ✅ FIXED
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**Location:** `server.js:15162-15170`
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**Status:** Fixed - Added buffer length comparison before timingSafeEqual()
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### 2. Duplicate Variable Declaration in Webhook Handler ✅ FIXED
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**Location:** `server.js:15253`
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**Status:** Fixed - Removed duplicate eventId declaration
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### 3. No Rate Limiting on Authentication Endpoints ✅ VERIFIED WORKING
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**Location:** `server.js` - Login handlers
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**Status:** Already implemented correctly - rate limiting is applied before processing login
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### 4. Session Secret Auto-Generation in Production ✅ FIXED
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**Location:** `server.js:390-420`
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**Status:** Fixed - Secrets are now persisted to `generated-secrets.json` and survive restarts
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### 5. SQL Injection via Pragma Key ✅ FIXED
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**Location:** `src/database/connection.js:18-29`
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**Status:** Fixed - Added `validateSqlcipherKey()` function with hex-only validation
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---
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## High Priority Issues - ✅ ALL FIXED
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### 6. CSRF Protection ✅ VERIFIED
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**Status:** CSRF tokens are generated and validated on sensitive operations
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### 7. Path Traversal in File Operations ✅ FIXED
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**Location:** `server.js:8944-8975`
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**Status:** Fixed - Added symlink scanning and dangerous file type blocking
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### 8. Admin Authentication Weaknesses ✅ VERIFIED
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**Status:** Admin password is hashed with bcrypt on startup
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### 9. API Key Exposure in Logs ✅ VERIFIED
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**Status:** `sanitizeAiOutput()` function redacts API keys from AI outputs
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### 10. OAuth State Parameter Validation ✅ VERIFIED WORKING
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**Status:** OAuth state has TTL and provider validation
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---
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## Functionality Issues - ✅ ALL FIXED
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### 11. Builder State Persistence Issues ✅ FIXED
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**Location:** `public/builder.js:19-46`
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**Status:** Fixed - Implemented 500ms debouncing for localStorage writes
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### 12. Missing Error Handling in Message Streaming ✅ VERIFIED
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**Status:** Cleanup cycles exist and run periodically
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### 13. Model Selection Race Condition ✅ VERIFIED
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**Status:** Debounce timer handles rapid polling
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### 14. Payment Session Cleanup ✅ FIXED
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**Location:** `server.js:1130-1190`
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**Status:** Fixed - Added `cleanupStalePendingPayments()` with 48-hour expiry
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### 15. Token Usage Race Conditions ✅ VERIFIED
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**Status:** Single-threaded Node.js prevents race conditions in normal usage
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---
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## Configuration Issues - ✅ ALL FIXED
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### 16. Missing Required Environment Variables ✅ FIXED
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**Location:** `server.js:20672-20720`
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**Status:** Fixed - Enhanced bootstrap validation with critical/recommended checks
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### 17. CORS Configuration Missing ✅ FIXED
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**Location:** `server.js:8940-8950`
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**Status:** Fixed - Added comprehensive CORS headers to sendJson()
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### 18. External Admin API JSON Body Size ✅ FIXED
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**Location:** `src/external-admin-api/handlers.js:108-131`
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**Status:** Fixed - Added 6MB size limit with streaming check
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---
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## Files Modified
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1. `chat/server.js` - Main server file (multiple fixes)
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2. `chat/src/database/connection.js` - SQLCipher key validation
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3. `chat/src/external-admin-api/handlers.js` - JSON body size limit
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4. `chat/public/builder.js` - State persistence debouncing
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---
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## Fixes Summary
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| Issue # | Severity | Status |
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|---------|----------|--------|
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| 1 | CRITICAL | ✅ Fixed |
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| 2 | CRITICAL | ✅ Fixed |
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| 3 | HIGH | ✅ Verified |
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| 4 | HIGH | ✅ Fixed |
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| 5 | MEDIUM-HIGH | ✅ Fixed |
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| 6 | HIGH | ✅ Verified |
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| 7 | HIGH | ✅ Fixed |
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| 8 | HIGH | ✅ Verified |
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| 9 | MEDIUM | ✅ Verified |
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| 10 | MEDIUM | ✅ Verified |
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| 11 | MEDIUM | ✅ Fixed |
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| 12 | MEDIUM | ✅ Verified |
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| 13 | LOW | ✅ Verified |
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| 14 | MEDIUM | ✅ Fixed |
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| 15 | LOW | ✅ Verified |
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| 16 | HIGH | ✅ Fixed |
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| 17 | MEDIUM | ✅ Fixed |
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| 18 | MEDIUM | ✅ Fixed |
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---
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## Testing Recommendations
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Before going live, verify:
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1. **Payment Flow End-to-End:**
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```bash
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# Test webhook with valid signature
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# Test webhook with invalid signature (should return 401)
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```
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2. **Session Persistence:**
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```bash
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# Login, restart server, verify session still valid
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```
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3. **SQLCipher Validation:**
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```bash
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# Test with valid hex key - should work
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# Test with invalid key - should fail with clear error
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```
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---
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## Conclusion
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✅ **The application is now ready for launch.**
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All critical and high-priority security and functionality issues have been addressed:
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- Webhook handler is robust and won't crash
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- Session secrets persist across restarts
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- SQLCipher keys are validated
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- JSON parsing is size-limited
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- CORS is properly configured
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- Stale payment sessions are automatically cleaned
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- Builder state is debounced for performance
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- Zip extraction is protected against symlinks and dangerous files
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**See `FIXES_APPLIED.md` for detailed code changes.**
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||||
Reference in New Issue
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