diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java
index a047e1249e3..a889f8b18bf 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java
@@ -37,6 +37,7 @@ import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
 import org.springframework.boot.actuate.endpoint.web.PathMappedEndpoints;
 import org.springframework.boot.actuate.endpoint.web.WebServerNamespace;
 import org.springframework.boot.security.reactive.ApplicationContextServerWebExchangeMatcher;
+import org.springframework.boot.web.context.WebServerApplicationContext;
 import org.springframework.context.ApplicationContext;
 import org.springframework.core.annotation.MergedAnnotation;
 import org.springframework.core.annotation.MergedAnnotations;
@@ -215,11 +216,15 @@ public final class EndpointRequest {
 
 		protected final boolean hasWebServerNamespace(ApplicationContext applicationContext,
 				WebServerNamespace webServerNamespace) {
-			if (applicationContext.getParent() == null) {
-				return WebServerNamespace.SERVER.equals(webServerNamespace);
-			}
-			String parentContextId = applicationContext.getParent().getId();
-			return applicationContext.getId().equals(parentContextId + ":" + webServerNamespace);
+			return WebServerApplicationContext.hasServerNamespace(applicationContext, webServerNamespace.getValue())
+					|| hasImplicitServerNamespace(applicationContext, webServerNamespace);
+		}
+
+		private boolean hasImplicitServerNamespace(ApplicationContext applicationContext,
+				WebServerNamespace webServerNamespace) {
+			return WebServerNamespace.SERVER.equals(webServerNamespace)
+					&& WebServerApplicationContext.getServerNamespace(applicationContext) == null
+					&& applicationContext.getParent() == null;
 		}
 
 		protected final String toString(List<Object> endpoints, String emptyValue) {
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequestTests.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequestTests.java
index b4d664105eb..18ac34841d0 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequestTests.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequestTests.java
@@ -32,6 +32,8 @@ import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
 import org.springframework.boot.actuate.endpoint.web.PathMappedEndpoint;
 import org.springframework.boot.actuate.endpoint.web.PathMappedEndpoints;
 import org.springframework.boot.actuate.endpoint.web.WebServerNamespace;
+import org.springframework.boot.web.context.WebServerApplicationContext;
+import org.springframework.boot.web.server.WebServer;
 import org.springframework.context.support.StaticApplicationContext;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.server.reactive.ServerHttpRequest;
@@ -39,6 +41,7 @@ import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
 import org.springframework.mock.http.server.reactive.MockServerHttpResponse;
 import org.springframework.security.web.server.util.matcher.ServerWebExchangeMatcher;
+import org.springframework.web.context.support.StaticWebApplicationContext;
 import org.springframework.web.server.ServerWebExchange;
 import org.springframework.web.server.WebHandler;
 import org.springframework.web.server.adapter.HttpWebHandlerAdapter;
@@ -324,10 +327,8 @@ class EndpointRequestTests {
 			PathMappedEndpoints pathMappedEndpoints, WebServerNamespace namespace) {
 		StaticApplicationContext context = new StaticApplicationContext();
 		if (namespace != null && !WebServerNamespace.SERVER.equals(namespace)) {
-			StaticApplicationContext parentContext = new StaticApplicationContext();
-			parentContext.setId("app");
+			NamedStaticWebApplicationContext parentContext = new NamedStaticWebApplicationContext(namespace);
 			context.setParent(parentContext);
-			context.setId(parentContext.getId() + ":" + namespace);
 		}
 		context.registerBean(WebEndpointProperties.class);
 		if (pathMappedEndpoints != null) {
@@ -360,6 +361,27 @@ class EndpointRequestTests {
 		return endpoint;
 	}
 
+	static class NamedStaticWebApplicationContext extends StaticWebApplicationContext
+			implements WebServerApplicationContext {
+
+		private final WebServerNamespace webServerNamespace;
+
+		NamedStaticWebApplicationContext(WebServerNamespace webServerNamespace) {
+			this.webServerNamespace = webServerNamespace;
+		}
+
+		@Override
+		public WebServer getWebServer() {
+			return null;
+		}
+
+		@Override
+		public String getServerNamespace() {
+			return (this.webServerNamespace != null) ? this.webServerNamespace.getValue() : null;
+		}
+
+	}
+
 	static class RequestMatcherAssert implements AssertDelegateTarget {
 
 		private final StaticApplicationContext context;