The OWASP Top 10 is a standard awareness document for developers and web application security, representing a broad consensus of the most critical security risks to web applications. This includes:

Broken Access Control

Cryptographic Failures

Injection

Insecure Design

Security Misconfiguration

Vulnerable and Outdated Components

Identification and Authentication Failures

Software and Data Integrity Failures

Security Logging and Monitoring Failures

Server-Side Request Forgery