diff --git a/litellm/proxy/_experimental/mcp_server/server.py b/litellm/proxy/_experimental/mcp_server/server.py
index 0fe510891d9..e241b0f9c05 100644
--- a/litellm/proxy/_experimental/mcp_server/server.py
+++ b/litellm/proxy/_experimental/mcp_server/server.py
@@ -2844,7 +2844,7 @@ if MCP_AVAILABLE:
                 status_code=500,
                 content={
                     "error": "Authentication processing failed",
-                    "details": str(e),
+                    "details": "An internal error occurred during authentication processing.",
                 },
             )
             await error_response(scope, receive, send)