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class="sidebar-link">Basic Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-digest.html" class="sidebar-link">Digest Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage.html" class="sidebar-link">Storage Mechanisms</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-in-memory.html" class="sidebar-link">In-Memory Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-jdbc.html" class="sidebar-link">JDBC Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-user-details.html" class="sidebar-link">UserDetails</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-user-details-service.html" class="sidebar-link">UserDetailsService</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-password-encoder.html" class="sidebar-link">PasswordEncoder</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-dao-authentication-provider.html" class="sidebar-link">DaoAuthenticationProvider</a></li><li><a href="/en/spring-security/servlet-authentication-passwords-storage-ldap.html" class="sidebar-link">LDAP Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-session-management.html" class="sidebar-link">Session Management</a></li><li><a href="/en/spring-security/servlet-authentication-rememberme.html" class="sidebar-link">Remember-Me Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-openid.html" class="sidebar-link">OpenID Support</a></li><li><a href="/en/spring-security/servlet-authentication-anonymous.html" class="sidebar-link">Anonymous Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-preauth.html" class="sidebar-link">Pre-Authentication Scenarios</a></li><li><a href="/en/spring-security/servlet-authentication-jaas.html" class="sidebar-link">Java Authentication and Authorization Service (JAAS) Provider</a></li><li><a href="/en/spring-security/servlet-authentication-cas.html" class="sidebar-link">CAS Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-x509.html" class="sidebar-link">X.509 Authentication</a></li><li><a href="/en/spring-security/servlet-authentication-runas.html" class="sidebar-link">Run-As Authentication Replacement</a></li><li><a href="/en/spring-security/servlet-authentication-logout.html" class="sidebar-link">Handling Logouts</a></li><li><a href="/en/spring-security/servlet-authentication-events.html" class="sidebar-link">Authentication Events</a></li><li><a href="/en/spring-security/servlet-authorization-.html" class="sidebar-link">Authorization</a></li><li><a href="/en/spring-security/servlet-authorization-architecture.html" class="sidebar-link">Authorization Architecture</a></li><li><a href="/en/spring-security/servlet-authorization-authorize-http-requests.html" class="sidebar-link">Authorize HttpServletRequests with AuthorizationFilter</a></li><li><a href="/en/spring-security/servlet-authorization-authorize-requests.html" class="sidebar-link">Authorize HttpServletRequest with FilterSecurityInterceptor</a></li><li><a href="/en/spring-security/servlet-authorization-expression-based.html" class="sidebar-link">Expression-Based Access Control</a></li><li><a href="/en/spring-security/servlet-authorization-secure-objects.html" class="sidebar-link">Secure Object Implementations</a></li><li><a href="/en/spring-security/servlet-authorization-method-security.html" class="sidebar-link">Method Security</a></li><li><a href="/en/spring-security/servlet-authorization-acls.html" class="sidebar-link">Domain Object Security (ACLs)</a></li><li><a href="/en/spring-security/servlet-oauth2-.html" class="sidebar-link">OAuth2</a></li><li><a href="/en/spring-security/servlet-oauth2-login.html" class="sidebar-link">OAuth 2.0 Login</a></li><li><a href="/en/spring-security/servlet-oauth2-login-core.html" class="sidebar-link">Core Configuration</a></li><li><a href="/en/spring-security/servlet-oauth2-login-advanced.html" class="sidebar-link">Advanced Configuration</a></li><li><a href="/en/spring-security/servlet-oauth2-client.html" class="sidebar-link">OAuth 2.0 Client</a></li><li><a href="/en/spring-security/servlet-oauth2-client-core.html" class="sidebar-link">Core Interfaces / Classes</a></li><li><a href="/en/spring-security/servlet-oauth2-client-authorization-grants.html" class="sidebar-link">Authorization Grant Support</a></li><li><a href="/en/spring-security/servlet-oauth2-client-client-authentication.html" class="sidebar-link">Client Authentication Support</a></li><li><a href="/en/spring-security/servlet-oauth2-client-authorized-clients.html" class="sidebar-link">Authorized Client Features</a></li><li><a href="/en/spring-security/servlet-oauth2-resource-server.html" class="sidebar-link">OAuth 2.0 Resource Server</a></li><li><a href="/en/spring-security/servlet-oauth2-resource-server-jwt.html" class="sidebar-link">OAuth 2.0 Resource Server JWT</a></li><li><a href="/en/spring-security/servlet-oauth2-resource-server-opaque-token.html" class="sidebar-link">OAuth 2.0 Resource Server Opaque Token</a></li><li><a href="/en/spring-security/servlet-oauth2-resource-server-multitenancy.html" class="sidebar-link">OAuth 2.0 Resource Server Multitenancy</a></li><li><a href="/en/spring-security/servlet-oauth2-resource-server-bearer-tokens.html" class="sidebar-link">OAuth 2.0 Bearer Tokens</a></li><li><a href="/en/spring-security/servlet-saml2.html" class="sidebar-link">SAML2</a></li><li><a href="/en/spring-security/servlet-saml2-login.html" class="sidebar-link">SAML 2.0 Login</a></li><li><a href="/en/spring-security/servlet-saml2-login-overview.html" class="sidebar-link">SAML 2.0 Login Overview</a></li><li><a href="/en/spring-security/servlet-saml2-login-authentication-requests.html" class="sidebar-link">Producing &lt;saml2:AuthnRequest&gt;s</a></li><li><a href="/en/spring-security/servlet-saml2-login-authentication.html" class="sidebar-link">Authenticating &lt;saml2:Response&gt;s</a></li><li><a href="/en/spring-security/servlet-saml2-logout.html" class="sidebar-link">Performing Single Logout</a></li><li><a href="/en/spring-security/servlet-saml2-metadata.html" class="sidebar-link">Producing &lt;saml2:SPSSODescriptor&gt; Metadata</a></li><li><a href="/en/spring-security/servlet-exploits.html" class="sidebar-link">Protection Against Exploits</a></li><li><a href="/en/spring-security/servlet-exploits-csrf.html" class="sidebar-link">Cross Site Request Forgery (CSRF) for Servlet Environments</a></li><li><a href="/en/spring-security/servlet-exploits-headers.html" class="sidebar-link">Security HTTP Response Headers</a></li><li><a href="/en/spring-security/servlet-exploits-http.html" class="sidebar-link">HTTP</a></li><li><a href="/en/spring-security/servlet-exploits-firewall.html" class="sidebar-link">HttpFirewall</a></li><li><a href="/en/spring-security/servlet-integrations.html" class="sidebar-link">Integrations</a></li><li><a href="/en/spring-security/servlet-integrations-concurrency.html" class="sidebar-link">Concurrency Support</a></li><li><a href="/en/spring-security/servlet-integrations-jackson.html" class="sidebar-link">Jackson Support</a></li><li><a href="/en/spring-security/servlet-integrations-localization.html" class="sidebar-link">Localization</a></li><li><a href="/en/spring-security/servlet-integrations-servlet-api.html" class="sidebar-link">Servlet API integration</a></li><li><a href="/en/spring-security/servlet-integrations-data.html" class="sidebar-link">Spring Data Integration</a></li><li><a href="/en/spring-security/servlet-integrations-mvc.html" class="sidebar-link">Spring MVC Integration</a></li><li><a href="/en/spring-security/servlet-integrations-websocket.html" class="sidebar-link">WebSocket Security</a></li><li><a href="/en/spring-security/servlet-integrations-cors.html" class="sidebar-link">CORS</a></li><li><a href="/en/spring-security/servlet-integrations-jsp-taglibs.html" class="sidebar-link">JSP Tag Libraries</a></li><li><a href="/en/spring-security/servlet-configuration-java.html" class="sidebar-link">Java Configuration</a></li><li><a href="/en/spring-security/servlet-configuration-kotlin.html" class="sidebar-link">Kotlin Configuration</a></li><li><a href="/en/spring-security/servlet-configuration-xml-namespace.html" class="sidebar-link">Security Namespace Configuration</a></li><li><a href="/en/spring-security/servlet-test.html" class="sidebar-link">Testing</a></li><li><a href="/en/spring-security/servlet-test-method.html" class="sidebar-link">Testing Method Security</a></li><li><a href="/en/spring-security/servlet-test-mockmvc.html" class="sidebar-link">Spring MVC Test Integration</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-setup.html" class="sidebar-link">Setting Up MockMvc and Spring Security</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-request-post-processors.html" class="sidebar-link">SecurityMockMvcRequestPostProcessors</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-authentication.html" class="sidebar-link">Running a Test as a User in Spring MVC Test</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-csrf.html" class="sidebar-link">Testing with CSRF Protection</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-form-login.html" class="sidebar-link">Testing Form Based Authentication</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-http-basic.html" class="sidebar-link">Testing HTTP Basic Authentication</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-oauth2.html" class="sidebar-link">Testing OAuth 2.0</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-logout.html" class="sidebar-link">Testing Logout</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-request-builders.html" class="sidebar-link">SecurityMockMvcRequestBuilders</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-result-matchers.html" class="sidebar-link">SecurityMockMvcResultMatchers</a></li><li><a href="/en/spring-security/servlet-test-mockmvc-result-handlers.html" class="sidebar-link">SecurityMockMvcResultHandlers</a></li><li><a href="/en/spring-security/servlet-appendix.html" class="sidebar-link">Appendix</a></li><li><a href="/en/spring-security/servlet-appendix-database-schema.html" class="sidebar-link">Security Database Schema</a></li><li><a href="/en/spring-security/servlet-appendix-namespace.html" class="sidebar-link">The Security Namespace</a></li><li><a href="/en/spring-security/servlet-appendix-namespace-authentication-manager.html" class="sidebar-link">Authentication Services</a></li><li><a href="/en/spring-security/servlet-appendix-namespace-http.html" class="sidebar-link">Web Application Security</a></li><li><a href="/en/spring-security/servlet-appendix-namespace-method-security.html" class="sidebar-link">Method Security</a></li><li><a href="/en/spring-security/servlet-appendix-namespace-ldap.html" class="sidebar-link">LDAP Namespace Options</a></li><li><a href="/en/spring-security/servlet-appendix-namespace-websocket.html" class="sidebar-link">WebSocket Security</a></li><li><a href="/en/spring-security/servlet-appendix-faq.html" class="sidebar-link">Spring Security FAQ</a></li><li><a href="/en/spring-security/reactive.html" class="sidebar-link">Reactive Applications</a></li><li><a href="/en/spring-security/reactive-getting-started.html" class="sidebar-link">Getting Started with WebFlux Applications</a></li><li><a href="/en/spring-security/reactive-authentication-x509.html" class="sidebar-link">Reactive X.509 Authentication</a></li><li><a href="/en/spring-security/reactive-authentication-logout.html" class="sidebar-link">Logout</a></li><li><a href="/en/spring-security/reactive-authorization-authorize-http-requests.html" class="sidebar-link">Authorize ServerHttpRequest</a></li><li><a href="/en/spring-security/reactive-authorization-method.html" class="sidebar-link">EnableReactiveMethodSecurity</a></li><li><a href="/en/spring-security/reactive-oauth2.html" class="sidebar-link">OAuth2 WebFlux</a></li><li><a href="/en/spring-security/reactive-oauth2-login.html" class="sidebar-link">OAuth 2.0 Login</a></li><li><a href="/en/spring-security/reactive-oauth2-login-core.html" class="sidebar-link">Core Configuration</a></li><li><a href="/en/spring-security/reactive-oauth2-login-advanced.html" class="sidebar-link">Advanced Configuration</a></li><li><a href="/en/spring-security/reactive-oauth2-client.html" class="sidebar-link">OAuth 2.0 Client</a></li><li><a href="/en/spring-security/reactive-oauth2-client-core.html" class="sidebar-link">Core Interfaces / Classes</a></li><li><a href="/en/spring-security/reactive-oauth2-client-authorization-grants.html" class="sidebar-link">Authorization Grant Support</a></li><li><a href="/en/spring-security/reactive-oauth2-client-client-authentication.html" class="sidebar-link">Client Authentication Support</a></li><li><a href="/en/spring-security/reactive-oauth2-client-authorized-clients.html" class="sidebar-link">Authorized Clients</a></li><li><a href="/en/spring-security/reactive-oauth2-resource-server.html" class="sidebar-link">OAuth 2.0 Resource Server</a></li><li><a href="/en/spring-security/reactive-oauth2-resource-server-jwt.html" class="sidebar-link">OAuth 2.0 Resource Server JWT</a></li><li><a href="/en/spring-security/reactive-oauth2-resource-server-opaque-token.html" class="sidebar-link">OAuth 2.0 Resource Server Opaque Token</a></li><li><a href="/en/spring-security/reactive-oauth2-resource-server-multitenancy.html" class="sidebar-link">OAuth 2.0 Resource Server Multitenancy</a></li><li><a href="/en/spring-security/reactive-oauth2-resource-server-bearer-tokens.html" class="sidebar-link">OAuth 2.0 Resource Server Bearer Tokens</a></li><li><a href="/en/spring-security/reactive-exploits.html" class="sidebar-link">Protection Against Exploits</a></li><li><a href="/en/spring-security/reactive-exploits-csrf.html" class="sidebar-link">Cross Site Request Forgery (CSRF) for WebFlux Environments</a></li><li><a href="/en/spring-security/reactive-exploits-headers.html" aria-current="page" class="active sidebar-link">Security HTTP Response Headers</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#default-security-headers" class="sidebar-link">Default Security Headers</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#cache-control" class="sidebar-link">Cache Control</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#content-type-options" class="sidebar-link">Content Type Options</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#" class="sidebar-link"></a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#x-frame-options" class="sidebar-link">X-Frame-Options</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#x-xss-protection" class="sidebar-link">X-XSS-Protection</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#-2" class="sidebar-link"></a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#referrer-policy" class="sidebar-link">Referrer Policy</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#feature-policy" class="sidebar-link">Feature Policy</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#permissions-policy" class="sidebar-link">Permissions Policy</a></li><li class="sidebar-sub-header"><a href="/en/spring-security/reactive-exploits-headers.html#clear-site-data" class="sidebar-link">Clear Site Data</a></li></ul></li><li><a href="/en/spring-security/reactive-exploits-http.html" class="sidebar-link">HTTP</a></li><li><a href="/en/spring-security/reactive-integrations-cors.html" class="sidebar-link">CORS</a></li><li><a href="/en/spring-security/reactive-integrations-rsocket.html" class="sidebar-link">RSocket Security</a></li><li><a href="/en/spring-security/reactive-test.html" class="sidebar-link">Reactive Test Support</a></li><li><a href="/en/spring-security/reactive-test-method.html" class="sidebar-link">Testing Method Security</a></li><li><a href="/en/spring-security/reactive-test-web.html" class="sidebar-link">Testing Web Security</a></li><li><a href="/en/spring-security/reactive-test-web-setup.html" class="sidebar-link">WebTestClient Security Setup</a></li><li><a href="/en/spring-security/reactive-test-web-authentication.html" class="sidebar-link">Testing Authentication</a></li><li><a href="/en/spring-security/reactive-test-web-csrf.html" class="sidebar-link">Testing with CSRF</a></li><li><a href="/en/spring-security/reactive-test-web-oauth2.html" class="sidebar-link">Testing OAuth 2.0</a></li><li><a href="/en/spring-security/reactive-configuration-webflux.html" class="sidebar-link">WebFlux Security</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="security-http-response-headers"><a href="#security-http-response-headers" class="header-anchor">#</a> Security HTTP Response Headers</h1> <p><a href="/features/exploits/headers.html#headers">Security HTTP Response Headers</a> can be used to increase the security of web applications.
This section is dedicated to WebFlux based support for Security HTTP Response Headers.</p> <h2 id="default-security-headers"><a href="#default-security-headers" class="header-anchor">#</a> Default Security Headers</h2> <p>Spring Security provides a <a href="/features/exploits/headers.html#headers-default">default set of Security HTTP Response Headers</a> to provide secure defaults.
While each of these headers are considered best practice, it should be noted that not all clients utilize the headers, so additional testing is encouraged.</p> <p>You can customize specific headers.
For example, assume that you want the defaults except you wish to specify <code>SAMEORIGIN</code> for <a href="/servlet/exploits/headers.html#servlet-headers-frame-options">X-Frame-Options</a>.</p> <p>You can easily do this with the following Configuration:</p> <p>Example 1. Customize Default Security Headers</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.frameOptions(frameOptions -&gt; frameOptions
				.mode(Mode.SAMEORIGIN)
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            frameOptions {
                mode = Mode.SAMEORIGIN
            }
        }
    }
}
</code></pre></div><p>If you do not want the defaults to be added and want explicit control over what should be used, you can disable the defaults.
An example is provided below:</p> <p>Example 2. Disable HTTP Security Response Headers</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers.disable());
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            disable()
        }
    }
}
</code></pre></div><h2 id="cache-control"><a href="#cache-control" class="header-anchor">#</a> Cache Control</h2> <p>Spring Security includes <a href="/features/exploits/headers.html#headers-cache-control">Cache Control</a> headers by default.</p> <p>However, if you actually want to cache specific responses, your application can selectively add them to the <a href="https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/http/server/reactive/ServerHttpResponse.html" target="_blank" rel="noopener noreferrer">ServerHttpResponse<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a> to override the header set by Spring Security.
This is useful to ensure things like CSS, JavaScript, and images are properly cached.</p> <p>When using Spring WebFlux, this is typically done within your configuration.
Details on how to do this can be found in the <a href="https://docs.spring.io/spring/docs/5.0.0.RELEASE/spring-framework-reference/web-reactive.html#webflux-config-static-resources" target="_blank" rel="noopener noreferrer">Static Resources<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a> portion of the Spring Reference documentation</p> <p>If necessary, you can also disable Spring Security’s cache control HTTP response headers.</p> <p>Example 3. Cache Control Disabled</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.cache(cache -&gt; cache.disable())
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            cache {
                disable()
            }
        }
    }
}
</code></pre></div><h2 id="content-type-options"><a href="#content-type-options" class="header-anchor">#</a> Content Type Options</h2> <p>Spring Security includes <a href="/features/exploits/headers.html#headers-content-type-options">Content-Type</a> headers by default.
However, you can disable it with:</p> <p>Example 4. Content Type Options Disabled</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.contentTypeOptions(contentTypeOptions -&gt; contentTypeOptions.disable())
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            contentTypeOptions {
                disable()
            }
        }
    }
}
</code></pre></div><h2 id=""><a href="#" class="header-anchor">#</a></h2> <p>Spring Security provides the <a href="/features/exploits/headers.html#headers-hsts">Strict Transport Security</a> header by default.
However, you can customize the results explicitly.
For example, the following is an example of explicitly providing HSTS:</p> <p>Example 5. Strict Transport Security</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.hsts(hsts -&gt; hsts
				.includeSubdomains(true)
				.preload(true)
				.maxAge(Duration.ofDays(365))
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            hsts {
                includeSubdomains = true
                preload = true
                maxAge = Duration.ofDays(365)
            }
        }
    }
}
</code></pre></div><h2 id="x-frame-options"><a href="#x-frame-options" class="header-anchor">#</a> X-Frame-Options</h2> <p>By default, Spring Security disables rendering within an iframe using <a href="/features/exploits/headers.html#headers-frame-options">X-Frame-Options</a>.</p> <p>You can customize frame options to use the same origin using the following:</p> <p>Example 6. X-Frame-Options: SAMEORIGIN</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.frameOptions(frameOptions -&gt; frameOptions
				.mode(SAMEORIGIN)
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            frameOptions {
                mode = SAMEORIGIN
            }
        }
    }
}
</code></pre></div><h2 id="x-xss-protection"><a href="#x-xss-protection" class="header-anchor">#</a> X-XSS-Protection</h2> <p>By default, Spring Security instructs browsers to block reflected XSS attacks using the &lt;&lt;headers-xss-protection,X-XSS-Protection header&gt;.
You can disable <code>X-XSS-Protection</code> with the following Configuration:</p> <p>Example 7. X-XSS-Protection Customization</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.xssProtection(xssProtection -&gt; xssProtection.disable())
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            xssProtection {
                disable()
            }
        }
    }
}
</code></pre></div><h2 id="-2"><a href="#-2" class="header-anchor">#</a></h2> <p>Spring Security does not add <a href="/features/exploits/headers.html#headers-csp">Content Security Policy</a> by default, because a reasonable default is impossible to know without context of the application.
The web application author must declare the security policy(s) to enforce and/or monitor for the protected resources.</p> <p>For example, given the following security policy:</p> <p>Example 8. Content Security Policy Example</p> <div class="language- extra-class"><pre class="language-text"><code>Content-Security-Policy: script-src 'self' https://trustedscripts.example.com; object-src https://trustedplugins.example.com; report-uri /csp-report-endpoint/
</code></pre></div><p>You can enable the CSP header as shown below:</p> <p>Example 9. Content Security Policy</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.contentSecurityPolicy(policy -&gt; policy
				.policyDirectives(&quot;script-src 'self' https://trustedscripts.example.com; object-src https://trustedplugins.example.com; report-uri /csp-report-endpoint/&quot;)
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            contentSecurityPolicy {
                policyDirectives = &quot;script-src 'self' https://trustedscripts.example.com; object-src https://trustedplugins.example.com; report-uri /csp-report-endpoint/&quot;
            }
        }
    }
}
</code></pre></div><p>To enable the CSP <code>report-only</code> header, provide the following configuration:</p> <p>Example 10. Content Security Policy Report Only</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.contentSecurityPolicy(policy -&gt; policy
				.policyDirectives(&quot;script-src 'self' https://trustedscripts.example.com; object-src https://trustedplugins.example.com; report-uri /csp-report-endpoint/&quot;)
				.reportOnly()
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            contentSecurityPolicy {
                policyDirectives = &quot;script-src 'self' https://trustedscripts.example.com; object-src https://trustedplugins.example.com; report-uri /csp-report-endpoint/&quot;
                reportOnly = true
            }
        }
    }
}
</code></pre></div><h2 id="referrer-policy"><a href="#referrer-policy" class="header-anchor">#</a> Referrer Policy</h2> <p>Spring Security does not add <a href="/features/exploits/headers.html#headers-referrer">Referrer Policy</a> headers by default.
You can enable the Referrer Policy header using configuration as shown below:</p> <p>Example 11. Referrer Policy Configuration</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.referrerPolicy(referrer -&gt; referrer
				.policy(ReferrerPolicy.SAME_ORIGIN)
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            referrerPolicy {
                policy = ReferrerPolicy.SAME_ORIGIN
            }
        }
    }
}
</code></pre></div><h2 id="feature-policy"><a href="#feature-policy" class="header-anchor">#</a> Feature Policy</h2> <p>Spring Security does not add <a href="/features/exploits/headers.html#headers-feature">Feature Policy</a> headers by default.
The following <code>Feature-Policy</code> header:</p> <p>Example 12. Feature-Policy Example</p> <div class="language- extra-class"><pre class="language-text"><code>Feature-Policy: geolocation 'self'
</code></pre></div><p>You can enable the Feature Policy header as shown below:</p> <p>Example 13. Feature-Policy Configuration</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.featurePolicy(&quot;geolocation 'self'&quot;)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            featurePolicy(&quot;geolocation 'self'&quot;)
        }
    }
}
</code></pre></div><h2 id="permissions-policy"><a href="#permissions-policy" class="header-anchor">#</a> Permissions Policy</h2> <p>Spring Security does not add <a href="/features/exploits/headers.html#headers-permissions">Permissions Policy</a> headers by default.
The following <code>Permissions-Policy</code> header:</p> <p>Example 14. Permissions-Policy Example</p> <div class="language- extra-class"><pre class="language-text"><code>Permissions-Policy: geolocation=(self)
</code></pre></div><p>You can enable the Permissions Policy header as shown below:</p> <p>Example 15. Permissions-Policy Configuration</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.headers(headers -&gt; headers
			.permissionsPolicy(permissions -&gt; permissions
				.policy(&quot;geolocation=(self)&quot;)
			)
		);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http {
        // ...
        headers {
            permissionsPolicy {
                policy = &quot;geolocation=(self)&quot;
            }
        }
    }
}
</code></pre></div><h2 id="clear-site-data"><a href="#clear-site-data" class="header-anchor">#</a> Clear Site Data</h2> <p>Spring Security does not add <a href="/features/exploits/headers.html#headers-clear-site-data">Clear-Site-Data</a> headers by default.
The following Clear-Site-Data header:</p> <p>Example 16. Clear-Site-Data Example</p> <div class="language- extra-class"><pre class="language-text"><code>Clear-Site-Data: &quot;cache&quot;, &quot;cookies&quot;
</code></pre></div><p>can be sent on log out with the following configuration:</p> <p>Example 17. Clear-Site-Data Configuration</p> <p>Java</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	ServerLogoutHandler securityContext = new SecurityContextServerLogoutHandler();
	ClearSiteDataServerHttpHeadersWriter writer = new ClearSiteDataServerHttpHeadersWriter(CACHE, COOKIES);
	ServerLogoutHandler clearSiteData = new HeaderWriterServerLogoutHandler(writer);
	DelegatingServerLogoutHandler logoutHandler = new DelegatingServerLogoutHandler(securityContext, clearSiteData);

	http
		// ...
		.logout()
			.logoutHandler(logoutHandler);
	return http.build();
}
</code></pre></div><p>Kotlin</p> <div class="language- extra-class"><pre class="language-text"><code>@Bean
fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    val securityContext: ServerLogoutHandler = SecurityContextServerLogoutHandler()
    val writer = ClearSiteDataServerHttpHeadersWriter(CACHE, COOKIES)
    val clearSiteData: ServerLogoutHandler = HeaderWriterServerLogoutHandler(writer)
    val customLogoutHandler = DelegatingServerLogoutHandler(securityContext, clearSiteData)

    return http {
        // ...
        logout {
            logoutHandler = customLogoutHandler
        }
    }
}
</code></pre></div></div> <footer class="page-edit"><div class="edit-link"><a href="https://gitcode.net/dev-cloud/spring-docs/-/blob/master/docs/en/spring-security/reactive-exploits-headers.md" target="_blank" rel="noopener noreferrer">Edit this page on GitCode</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">Thu Mar 17 2022 18:19:53 GMT+0800</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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