Unexpected 403 Forbidden on POST Request to Spring Boot REST API with Basic Auth
I'm confused about I'm working on a personal project and Hey everyone, I'm running into an issue that's driving me crazy... I'm confused about I'm refactoring my project and I just started working with I've been banging my head against this for hours... I tried several approaches but none seem to work... I'm working with an scenario where my Spring Boot REST API is returning a 403 Forbidden status when I try to POST data to one of my endpoints, which is secured with Basic Authentication. I've set up a simple security configuration using Spring Security, and the POST request works fine when I use a tool like Postman, but fails when I try to send it from my frontend application. Here’s a snippet of my security configuration: ```java import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; @Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { auth.inMemoryAuthentication() .withUser("user").password("password").roles("USER"); } @Override protected void configure(HttpSecurity http) throws Exception { http.csrf().disable() .authorizeRequests() .antMatchers("/api/posts").authenticated() .anyRequest().permitAll() .and() .httpBasic(); } } ``` I’m sending the following POST request from my frontend: ```javascript fetch('http://localhost:8080/api/posts', { method: 'POST', headers: { 'Content-Type': 'application/json', 'Authorization': 'Basic ' + btoa('user:password') }, body: JSON.stringify({ title: 'Hello World', content: 'This is a test post.' }) }); ``` The request works perfectly in Postman with the same headers and body, but when I try from my browser, I consistently receive a 403 Forbidden response. I've ensured that CORS is set up correctly in my application: ```java import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.CorsRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; @Configuration public class WebConfig implements WebMvcConfigurer { @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/api/**").allowedOrigins("http://localhost:3000").allowedMethods("GET", "POST"); } } ``` I suspect that there might be an scenario with how the browser is handling the authentication or perhaps the way that Spring Security is verifying the request, but I’m not sure how to debug this further. Any insights on why I'm getting this 403 behavior when posting from my frontend but not from Postman would be greatly appreciated! I'm working on a web app that needs to handle this. I've been using Java for about a year now. I'd love to hear your thoughts on this. For context: I'm using Java on Windows 10. Is this even possible? My team is using Java for this REST API. I'd really appreciate any guidance on this. I recently upgraded to Java stable. What's the correct way to implement this? This issue appeared after updating to Java 3.11.