Spring boot security config to allow preflight requests

SecurityConfig.kt

import org.springframework.web.cors.CorsUtils
import org.springframework.context.annotation.Configuration
import org.springframework.security.config.annotation.web.builders.HttpSecurity
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter

@Configuration
class SecurityConfig : WebSecurityConfigurerAdapter() {
    override fun configure(http: HttpSecurity) {
        http
            .authorizeRequests()
            .requestMatchers(CorsUtils::isPreFlightRequest).permitAll()
            .anyRequest().authenticated()
    }
}