Tips for Exploiting the Reflected XSS Vulnerability:
- Identify the Target Endpoint: Start by pinpointing the exact URL or API endpoint where user input is reflected back in the response. Carefully analyze form submissions, search parameters, or query strings in the library section to locate the vulnerable point.
- Inject a Marker Word: Use a unique, easily searchable string as a test payload. This helps confirm where your input is reflected in the page source. Check both the HTML content and any JavaScript rendering for evidence of reflection.
- Craft and Deploy Your Payload: Once the reflection point is confirmed, create an XSS payload tailored to the context (e.g., HTML, JavaScript, or event-based injection). Carefully consider any existing WAF (Web Application Firewall) rules—try encoding techniques, alternative event handlers, or creative payloads to bypass protection.
- Focus Area: This vulnerability was discovered specifically in the library search section, where users can search for book titles. Every search result is reflected back in the HTML, providing a clear avenue for script injection.
- Validate and Exploit Responsibly: After confirming the XSS, test it in a controlled environment. Ensure your actions follow responsible disclosure guidelines if this is for bug reporting or research.
