From d61f49128702b103996cf94d0d2baa918cf7e24a Mon Sep 17 00:00:00 2001
From: R <45811620+ray-lsr@users.noreply.github.com>
Date: Sun, 27 Aug 2023 22:52:06 +0800
Subject: [PATCH] serialize.allowlist is not include SingletonMap (#12962)

---
 dubbo-common/src/main/resources/security/serialize.allowlist | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dubbo-common/src/main/resources/security/serialize.allowlist b/dubbo-common/src/main/resources/security/serialize.allowlist
index 7c781a1e56..bab3d2d932 100644
--- a/dubbo-common/src/main/resources/security/serialize.allowlist
+++ b/dubbo-common/src/main/resources/security/serialize.allowlist
@@ -83,6 +83,7 @@ java.util.Collections$EmptyList
 java.util.Collections$EmptyMap
 java.util.Collections$SingletonSet
 java.util.Collections$SingletonList
+java.util.Collections$SingletonMap
 java.util.Collections$UnmodifiableCollection
 java.util.Collections$UnmodifiableList
 java.util.Collections$UnmodifiableMap