From 385760bddade35918eea1b3136c318cbf5b20300 Mon Sep 17 00:00:00 2001
From: barisusakli <barisusakli@gmail.com>
Date: Wed, 4 Feb 2015 12:09:54 -0500
Subject: [PATCH] #2690

---
 src/socket.io/groups.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/socket.io/groups.js b/src/socket.io/groups.js
index ea6148c4b7..b2b1b244ed 100644
--- a/src/socket.io/groups.js
+++ b/src/socket.io/groups.js
@@ -38,6 +38,10 @@ SocketGroups.leave = function(socket, data, callback) {
 		return callback(new Error('[[error:invalid-data]]'));
 	}
 
+	if (!parseInt(socket.uid, 10)) {
+		return callback(new Error('[[error:invalid-uid]]'));
+	}
+
 	groups.leave(data.groupName, socket.uid, callback);
 };