diff --git a/acl/src/main/java/org/apache/rocketmq/acl/plain/PlainPermissionManager.java b/acl/src/main/java/org/apache/rocketmq/acl/plain/PlainPermissionManager.java
index fc8fd095944..26077135ec4 100644
--- a/acl/src/main/java/org/apache/rocketmq/acl/plain/PlainPermissionManager.java
+++ b/acl/src/main/java/org/apache/rocketmq/acl/plain/PlainPermissionManager.java
@@ -34,6 +34,7 @@
import java.util.List;
import java.util.Map;
import java.util.Set;
+import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.commons.lang3.StringUtils;
@@ -66,7 +67,7 @@ public class PlainPermissionManager {
private Map accessKeyTable = new HashMap<>();
- private List globalWhiteRemoteAddressStrategy = new ArrayList<>();
+ private List globalWhiteRemoteAddressStrategy = new CopyOnWriteArrayList<>();
private RemoteAddressStrategyFactory remoteAddressStrategyFactory = new RemoteAddressStrategyFactory();
@@ -117,7 +118,7 @@ public void load() {
Map> aclPlainAccessResourceMap = new HashMap<>();
Map accessKeyTable = new HashMap<>();
- List globalWhiteRemoteAddressStrategy = new ArrayList<>();
+ List globalWhiteRemoteAddressStrategy = new CopyOnWriteArrayList<>();
Map> globalWhiteRemoteAddressStrategyMap = new HashMap<>();
Map dataVersionMap = new HashMap<>();