From 85a549f9c61fd387cf2f09abd0abc4c87aef45af Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Wed, 13 May 2015 03:38:58 +0200
Subject: [PATCH] fix blacklisted() to treat $mosquitoes as literals (not
 regexps)

---
 include/email-validation.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/email-validation.inc b/include/email-validation.inc
index 9b1ba98f2a..6e1d03c03b 100644
--- a/include/email-validation.inc
+++ b/include/email-validation.inc
@@ -99,6 +99,6 @@ function blacklisted($email) {
 	'graduatecentral',
     );
     foreach ($mosquitoes as $m) {
-        if (preg_match('/'.$m.'/i',$email)) return true;
+        if (preg_match('/'.preg_quote($m, '/').'/i',$email)) return true;
     }
 }