From 5da24b41204692e20ca255c65a325c9d91e37d0b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bar=C4=B1=C5=9F=20Soner=20U=C5=9Fakl=C4=B1?=
 <baris@nodebb.org>
Date: Thu, 16 Nov 2017 10:55:55 -0500
Subject: [PATCH] https://github.com/NodeBB/NodeBB/issues/6073

---
 src/socket.io/topics/tags.js | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/socket.io/topics/tags.js b/src/socket.io/topics/tags.js
index fd0c0d0987..2c50999b70 100644
--- a/src/socket.io/topics/tags.js
+++ b/src/socket.io/topics/tags.js
@@ -7,7 +7,7 @@ var utils = require('../../utils');
 
 module.exports = function (SocketTopics) {
 	SocketTopics.isTagAllowed = function (socket, data, callback) {
-		if (!data || !data.cid || !data.tag) {
+		if (!data || !utils.isNumber(data.cid) || !data.tag) {
 			return callback(new Error('[[error:invalid-data]]'));
 		}
 		async.waterfall([
@@ -15,10 +15,7 @@ module.exports = function (SocketTopics) {
 				db.getSortedSetRange('cid:' + data.cid + ':tag:whitelist', 0, -1, next);
 			},
 			function (tagWhitelist, next) {
-				if (!tagWhitelist.length) {
-					return next(null, true);
-				}
-				next(null, tagWhitelist.indexOf(data.tag) !== -1);
+				next(null, !tagWhitelist.length || tagWhitelist.includes(data.tag));
 			},
 		], callback);
 	};