Security Enhancements for Study Buddy Platform#1
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- Added helmet for secure HTTP headers. - Added express-rate-limit to protect login and chat endpoints. - Implemented JWT authentication middleware and protected product management routes. - Added input validation using express-validator for product creation and updates. - Centralized frontend API calls using an axios interceptor for automatic JWT attachment. - Restricted CORS origins and enforced environment-based JWT_SECRET. - Sanitized error responses to prevent information leakage. Co-authored-by: shofiahmed69 <149682848+shofiahmed69@users.noreply.github.com>
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| const instance = axios.create({ | ||
| baseURL: 'http://localhost:3000/api' | ||
| }); |
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Hardcoded localhost URL breaks production deployments
Medium Severity
The centralized axios instance uses a hardcoded baseURL: 'http://localhost:3000/api' that will only work in local development. The backend was made environment-variable-configurable with process.env.ALLOWED_ORIGINS, but the frontend lacks equivalent configuration. The codebase already uses import.meta.env.VITE_* for other configurations (like VITE_YOUTUBE_API_KEY in Admin.jsx), so this inconsistency will prevent the application from working in any non-localhost deployment.
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| app.post('/api/products', async (req, res) => { | ||
| const validateProduct = [ | ||
| body('name').notEmpty().trim().escape().withMessage('Name is required'), |
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HTML escaping at storage corrupts product names
Medium Severity
The validateProduct middleware applies .escape() to the name field, which converts HTML special characters to entities before storing in the database. A product name like "AT&T Course" becomes "AT&T Course" in the database. This causes data integrity issues: stored data doesn't match user input, searches for original text fail, and display shows encoded characters. HTML escaping belongs at render time, not storage time.
| }); | ||
| //update products | ||
| app.put('/api/product/:id', async (req, res) => { | ||
| app.put('/api/product/:id', authenticateToken, validateProduct, async (req, res) => { |
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Validation middleware prevents partial product updates
Medium Severity
The validateProduct middleware is applied to the PUT /api/product/:id route, requiring name, price, and quantity on every update request. This breaks partial update functionality—clients must now provide all three fields even when updating just one (e.g., changing only the price). Using the same validation for create and update operations is typically inappropriate since creates require all fields while updates often allow partial modifications.
1 participant
The application had several security vulnerabilities, including unprotected administrative routes, hardcoded secrets, permissive CORS, and lack of rate limiting.
This PR implements the following security enhancements:
helmetfor security headers andexpress-rate-limitto prevent brute-force attacks on/api/loginand/api/chat.JWT_SECRETwith an environment variable (with a fatal check) and implemented a robustauthenticateTokenmiddleware. This middleware is now applied to all product management routes (POST,PUT,DELETE).express-validatorto ensure that product data is properly validated and sanitized before being processed by the database.localStorageto all outgoing requests to the backend, ensuring seamless authentication across the application.These changes significantly improve the security posture of the application and bring it closer to production readiness.
PR created automatically by Jules for task 4122942926068583950 started by @shofiahmed69
Note
High Risk
Tightens backend security by adding JWT auth, rate limiting, CORS restrictions, and input validation on write endpoints; misconfiguration (env vars/origins) or new auth requirements could break existing clients and admin flows.
Overview
Adds a centralized frontend Axios client (
frontend/src/api/axios.js) that sets a base API URL and automatically attaches the JWT fromlocalStorage, then migratesHome,Login,Admin, andStudyBuddyAPI calls to use it.Hardens the Express API by moving
JWT_SECRETto an environment variable (fatal if missing), addinghelmet, configurable/restricted CORS (ALLOWED_ORIGINS), and rate limits on/api/loginand/api/chat.Protects product write endpoints by requiring
Bearerauth (authenticateToken) onPOST/PUT/DELETEand validates/sanitizes product fields viaexpress-validator; also replaces several error responses with generic messages and adds a404for missing products.Written by Cursor Bugbot for commit 7c8c81e. This will update automatically on new commits. Configure here.