diff --git a/README.md b/README.md
index d802aa86..9e358474 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # Claude Relay Service
 
+> [!CAUTION]
+> **安全更新通知**：v1.1.248 及以下版本存在严重的管理员认证绕过漏洞，攻击者可未授权访问管理面板。
+>
+> **请立即更新到 v1.1.249+ 版本**，或迁移到新一代项目 **[CRS 2.0 (sub2api)](https://github.com/Wei-Shaw/sub2api)**
+
 <div align="center">
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
diff --git a/README_EN.md b/README_EN.md
index 477c2f52..2eac90ca 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -1,5 +1,10 @@
 # Claude Relay Service
 
+> [!CAUTION]
+> **Security Update**: v1.1.248 and below contain a critical admin authentication bypass vulnerability allowing unauthorized access to the admin panel.
+>
+> **Please update to v1.1.249+ immediately**, or migrate to the next-generation project **[CRS 2.0 (sub2api)](https://github.com/Wei-Shaw/sub2api)**
+
 <div align="center">
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)