diff --git a/extensions/hibernate-validator/runtime/src/main/java/io/quarkus/hibernate/validator/runtime/locale/ResteasyReactiveLocaleResolver.java b/extensions/hibernate-validator/runtime/src/main/java/io/quarkus/hibernate/validator/runtime/locale/ResteasyReactiveLocaleResolver.java
index e40a354c3e221..fd1f1157935e9 100644
--- a/extensions/hibernate-validator/runtime/src/main/java/io/quarkus/hibernate/validator/runtime/locale/ResteasyReactiveLocaleResolver.java
+++ b/extensions/hibernate-validator/runtime/src/main/java/io/quarkus/hibernate/validator/runtime/locale/ResteasyReactiveLocaleResolver.java
@@ -7,6 +7,8 @@
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
+import io.quarkus.arc.Arc;
+import io.quarkus.arc.ManagedContext;
 import io.quarkus.vertx.http.runtime.CurrentVertxRequest;
 import io.vertx.core.MultiMap;
 import io.vertx.ext.web.RoutingContext;
@@ -23,6 +25,10 @@ public class ResteasyReactiveLocaleResolver extends AbstractLocaleResolver {
 
     @Override
     protected Map<String, List<String>> getHeaders() {
+        final ManagedContext requestContext = Arc.container().requestContext();
+        if (!requestContext.isActive()) {
+            return null;
+        }
         RoutingContext current = currentVertxRequest.getCurrent();
         if (current != null) {
             Map<String, List<String>> result = new HashMap<>();
diff --git a/integration-tests/hibernate-validator-resteasy-reactive/src/test/java/io/quarkus/it/hibernate/validator/ConfigMappingStartupValidatorTest.java b/integration-tests/hibernate-validator-resteasy-reactive/src/test/java/io/quarkus/it/hibernate/validator/ConfigMappingStartupValidatorTest.java
new file mode 100644
index 0000000000000..dd1bee1c31f87
--- /dev/null
+++ b/integration-tests/hibernate-validator-resteasy-reactive/src/test/java/io/quarkus/it/hibernate/validator/ConfigMappingStartupValidatorTest.java
@@ -0,0 +1,103 @@
+package io.quarkus.it.hibernate.validator;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.inject.Inject;
+import javax.validation.constraints.Pattern;
+
+import org.eclipse.microprofile.config.Config;
+import org.eclipse.microprofile.config.ConfigProvider;
+import org.eclipse.microprofile.config.spi.ConfigProviderResolver;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import io.quarkus.hibernate.validator.runtime.HibernateBeanValidationConfigValidator;
+import io.quarkus.runtime.configuration.QuarkusConfigFactory;
+import io.quarkus.test.junit.QuarkusTest;
+import io.quarkus.test.junit.QuarkusTestProfile;
+import io.quarkus.test.junit.TestProfile;
+import io.smallrye.config.ConfigMapping;
+import io.smallrye.config.ConfigValidationException;
+import io.smallrye.config.ConfigValidationException.Problem;
+import io.smallrye.config.ConfigValidator;
+import io.smallrye.config.SmallRyeConfig;
+import io.smallrye.config.SmallRyeConfigBuilder;
+import io.smallrye.config.WithDefault;
+
+@QuarkusTest
+@TestProfile(ConfigMappingStartupValidatorTest.Profile.class)
+public class ConfigMappingStartupValidatorTest {
+
+    @ConfigMapping(prefix = "config")
+    public static interface ConfigWithValidation {
+        public static final String CONFIG_WITH_VALIDATION_VALUE_MUST_BE_D_3 = "ConfigWithValidation.value() must be \"-\\d{3}\"";
+
+        @WithDefault("invalid-value")
+        @Pattern(regexp = "-\\d{3}", message = CONFIG_WITH_VALIDATION_VALUE_MUST_BE_D_3)
+        String value();
+    }
+
+    public static class Profile implements QuarkusTestProfile {
+        @Override
+        public boolean disableGlobalTestResources() {
+            return false;
+        }
+    }
+
+    private static SmallRyeConfig smallryeConfig;
+    private static Map<Class<?>, Exception> suppressedConfigValidatorExceptions;
+
+    @Inject
+    ConfigWithValidation config;
+
+    @BeforeAll
+    public static void doBefore() {
+        SmallRyeConfigBuilder builder = new SmallRyeConfigBuilder();
+        builder.withMapping(ConfigWithValidation.class).setAddDefaultSources(true)
+                .withValidator(new ConfigValidator() {
+                    final ConfigValidator base = new HibernateBeanValidationConfigValidator();
+
+                    @Override
+                    public void validateMapping(Class<?> mappingClass, String prefix, Object mappingObject)
+                            throws ConfigValidationException {
+                        try {
+                            base.validateMapping(mappingClass, prefix, mappingObject);
+                        } catch (Exception e) {
+                            suppressedConfigValidatorExceptions.put(mappingClass, e);
+                        }
+                    }
+                });
+        QuarkusConfigFactory.setConfig(smallryeConfig = builder.build());
+        Config conf = ConfigProvider.getConfig();
+        if (conf != smallryeConfig) {
+            ConfigProviderResolver cpr = ConfigProviderResolver.instance();
+            cpr.releaseConfig(conf);
+            ConfigProvider.getConfig();
+        }
+        suppressedConfigValidatorExceptions = new HashMap<>();
+    }
+
+    @AfterAll
+    public static void doAfter() {
+        ConfigProviderResolver cpr = ConfigProviderResolver.instance();
+        cpr.releaseConfig(smallryeConfig);
+        smallryeConfig = null;
+        suppressedConfigValidatorExceptions = null;
+    }
+
+    @Test
+    public void test() {
+        assertEquals("invalid-value", config.value());
+        ConfigValidationException ex = assertThrows(ConfigValidationException.class, () -> {
+            throw suppressedConfigValidatorExceptions.get(ConfigWithValidation.class);
+        });
+        assertEquals(1, ex.getProblemCount());
+        final Problem problem = ex.getProblem(0);
+        assertEquals("config.value " + ConfigWithValidation.CONFIG_WITH_VALIDATION_VALUE_MUST_BE_D_3, problem.getMessage());
+    }
+}