What vulnerabilities in web are you aware of?

Common web vulnerabilities that are frequently encountered:

• XSS (Cross-Site Scripting) — injecting malicious scripts into web pages that execute on other users' browsers.
• SQL Injection — inserting malicious SQL queries through user input.
• CSRF (Cross-Site Request Forgery) — an attack where the attacker tricks the user into performing unwanted actions on a website.
• Clickjacking — deceiving users with transparent layers to click on hidden elements.
• Vulnerabilities in authentication and session management — such as weak passwords, token leaks.
• Insufficient input validation — leading to various attacks and errors.

To protect, it is important to validate and escape input, use modern authentication mechanisms, implement Content Security Policy, and other security measures.