What is SQL injection and cross site scripting?

Related questions

1. What is XSS in PHP?
2. Does same origin prevent XSS?
3. What is stored XSS attack?
4. What is XSS payload?
5. What is meant by XSS?
6. What is reflected XSS attack?
7. Is SQL injection a server side vulnerability?
8. What can an attacker do with XSS?
9. What is a reflected XSS attack?
10. What is XSS filtering?

Tags

1. #trusted
2. #input
3. #consists
4. #scripts
5. #injection
6. #client
7. #insertion
8. #application
9. #which
10. #otherwise
11. #injected
12. #cross
13. #benign
14. #attack
15. #websites
16. #scripting
17. #query
18. #attacks
19. #malicious