Adds foundational utilities for XSS prevention without applying them yet.
This prepares the codebase for comprehensive input sanitization in a follow-up PR.
Changes:
- Added isomorphic-dompurify and jsdom dependencies
- Created sanitization utilities in src/utils/sanitization.js
- Includes recursive object sanitization functions
- Provides Express middleware for body and query sanitization
Infrastructure only - no behavioral changes yet.
Files added:
- src/utils/sanitization.js (sanitization utilities)
- package.json (new dependencies)
Next steps:
- Apply sanitization middleware in follow-up PR
- Enable XSS protection across application
gorkem-bwl