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Spring Boot Security by joaquimscosta

Name: Spring Boot Security
Author: joaquimscosta

Spring Boot Security

Spring Security 7 implementation for Spring Boot 4. Use when configuring authentication, authorization, OAuth2/JWT resource servers, method security, or CORS/CSRF. Covers the mandatory Lambda DSL migration, SecurityFilterChain patterns, @PreAuthorize, and password encoding. For testing secured endpoints, see spring-boot-testing skill.

joaquimscosta Updated Sep 21, 2026

File contents

Spring Security 7 for Spring Boot 4

Implements authentication and authorization with Spring Security 7's mandatory Lambda DSL.

Critical Breaking Changes

Removed API	Replacement	Status
`and()` method	Lambda DSL closures	Required
`authorizeRequests()`	`authorizeHttpRequests()`	Required
`antMatchers()`	`requestMatchers()`	Required
`WebSecurityConfigurerAdapter`	`SecurityFilterChain` bean	Required
`@EnableGlobalMethodSecurity`	`@EnableMethodSecurity`	Required

Core Workflow

Create SecurityFilterChain → 2. Define authorization → 3. Configure authentication → 4. Add method security → 5. Handle CORS/CSRF

See WORKFLOW.md for detailed step-by-step instructions with code examples.

Quick Patterns

See EXAMPLES.md for complete working examples including:

REST API Security with JWT/OAuth2 (Java + Kotlin)
Form Login with Session Security and CSRF
Method Security with @PreAuthorize and SpEL
CORS Configuration for cross-origin APIs
Password Encoder (Argon2 for Security 7)

Spring Boot 4 Specifics

Lambda DSL is mandatory (no and() chaining)
Argon2 password encoder: Argon2PasswordEncoder.defaultsForSpring7()
CSRF for SPAs: CookieCsrfTokenRepository.withHttpOnlyFalse()
@EnableMethodSecurity replaces @EnableGlobalMethodSecurity

Detailed References

Workflow: See WORKFLOW.md for detailed step-by-step security configuration
Examples: See EXAMPLES.md for complete working code examples
Troubleshooting: See TROUBLESHOOTING.md for common issues and Boot 4 migration
Security Configuration: See references/SECURITY-CONFIG.md for complete SecurityFilterChain patterns
Authentication: See references/AUTHENTICATION.md for UserDetailsService, password encoding
JWT/OAuth2: See references/JWT-OAUTH2.md for resource server, token validation

Related Skills

Need	Skill
Testing secured endpoints	`spring-boot-testing`
Actuator endpoint security	`spring-boot-observability`
Dependency verification	`spring-boot-verify`

Anti-Pattern Checklist

Anti-Pattern	Fix
Using `and()` chaining	Use Lambda DSL closures
`antMatchers()`	Replace with `requestMatchers()`
`authorizeRequests()`	Replace with `authorizeHttpRequests()`
CSRF disabled without JWT	Keep CSRF for session-based auth
Hardcoded credentials	Use environment variables or Secret Manager
`permitAll()` on sensitive endpoints	Audit all permit rules
Missing `authenticated()` default	End with `.anyRequest().authenticated()`

Critical Reminders

Lambda DSL is mandatory — No more and() chaining in Security 7
Order matters — More specific requestMatchers before general ones
CSRF for sessions — Only disable for stateless JWT APIs
Method security needs enabling — Add @EnableMethodSecurity
Test security configuration — Use @WithMockUser and JWT test support (see spring-boot-testing)

---name: spring-boot-securitydescription: Spring Security 7 implementation for Spring Boot 4. Use when configuring authentication, authorization, OAuth2/JWT resource servers, method security, or CORS/CSRF. Covers the mandatory Lambda DSL migration, SecurityFilterChain patterns, @PreAuthorize, and password encoding. For testing secured endpoints, see spring-boot-testing skill.---# Spring Security 7 for Spring Boot 4Implements authentication and authorization with Spring Security 7's mandatory Lambda DSL.## Critical Breaking Changes| Removed API | Replacement | Status ||-------------|-------------|--------|| `and()` method | Lambda DSL closures | **Required** || `authorizeRequests()` | `authorizeHttpRequests()` | **Required** || `antMatchers()` | `requestMatchers()` | **Required** || `WebSecurityConfigurerAdapter` | `SecurityFilterChain` bean | **Required** || `@EnableGlobalMethodSecurity` | `@EnableMethodSecurity` | **Required** |## Core Workflow1. Create SecurityFilterChain → 2. Define authorization → 3. Configure authentication → 4. Add method security → 5. Handle CORS/CSRFSee [WORKFLOW.md](WORKFLOW.md) for detailed step-by-step instructions with code examples.## Quick PatternsSee [EXAMPLES.md](EXAMPLES.md) for complete working examples including:- **REST API Security** with JWT/OAuth2 (Java + Kotlin)- **Form Login with Session Security** and CSRF- **Method Security** with @PreAuthorize and SpEL- **CORS Configuration** for cross-origin APIs- **Password Encoder** (Argon2 for Security 7)## Spring Boot 4 Specifics- **Lambda DSL** is mandatory (no `and()` chaining)- **Argon2** password encoder: `Argon2PasswordEncoder.defaultsForSpring7()`- **CSRF for SPAs**: `CookieCsrfTokenRepository.withHttpOnlyFalse()`- **@EnableMethodSecurity** replaces `@EnableGlobalMethodSecurity`## Detailed References- **Workflow**: See [WORKFLOW.md](WORKFLOW.md) for detailed step-by-step security configuration- **Examples**: See [EXAMPLES.md](EXAMPLES.md) for complete working code examples- **Troubleshooting**: See [TROUBLESHOOTING.md](TROUBLESHOOTING.md) for common issues and Boot 4 migration- **Security Configuration**: See [references/SECURITY-CONFIG.md](references/SECURITY-CONFIG.md) for complete SecurityFilterChain patterns- **Authentication**: See [references/AUTHENTICATION.md](references/AUTHENTICATION.md) for UserDetailsService, password encoding- **JWT/OAuth2**: See [references/JWT-OAUTH2.md](references/JWT-OAUTH2.md) for resource server, token validation## Related Skills| Need | Skill ||------|-------|| Testing secured endpoints | `spring-boot-testing` || Actuator endpoint security | `spring-boot-observability` || Dependency verification | `spring-boot-verify` |## Anti-Pattern Checklist| Anti-Pattern | Fix ||--------------|-----|| Using `and()` chaining | Use Lambda DSL closures || `antMatchers()` | Replace with `requestMatchers()` || `authorizeRequests()` | Replace with `authorizeHttpRequests()` || CSRF disabled without JWT | Keep CSRF for session-based auth || Hardcoded credentials | Use environment variables or Secret Manager || `permitAll()` on sensitive endpoints | Audit all permit rules || Missing `authenticated()` default | End with `.anyRequest().authenticated()` |## Critical Reminders1. **Lambda DSL is mandatory** — No more `and()` chaining in Security 72. **Order matters** — More specific `requestMatchers` before general ones3. **CSRF for sessions** — Only disable for stateless JWT APIs4. **Method security needs enabling** — Add `@EnableMethodSecurity`5. **Test security configuration** — Use `@WithMockUser` and JWT test support (see `spring-boot-testing`)

Frequently asked questions