What is XSS in PHP?

Related questions

1. Is SQL injection a server side vulnerability?
2. Is SQL injection illegal?
3. What is XSS filtering?
4. What is reflected XSS?
5. Why XSS is called cross site scripting?
6. What is XSS and its types?
7. What is blind XSS?
8. Is XSS client or server side?
9. Does same origin prevent XSS?
10. What is XSS payload?

Tags

1. #payload
2. #deliver
3. #vulnerabilities
4. #attacker
5. #whereby
6. #website
7. #cross
8. #javascript
9. #malicious
10. #abbreviated
11. #vulnerability
12. #class
13. #security
14. #scripting
15. #manages
16. #potentially
17. #applications
18. #common