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-rwxr-xr-xsystem/core/Security.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/system/core/Security.php b/system/core/Security.php
index c82b69ff9..1cb0a1136 100755
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -829,7 +829,7 @@ class CI_Security {
// each page load since a page could contain embedded
// sub-pages causing this feature to fail
if (isset($_COOKIE[$this->_csrf_cookie_name]) &&
- $_COOKIE[$this->_csrf_cookie_name] != '')
+ preg_match('#^[0-9a-f]{32}$#iS', $_COOKIE[$this->_csrf_cookie_name]) === 1)
{
return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name];
}