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-rw-r--r--system/libraries/Encrypt.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
index 679609251..dbe16b096 100644
--- a/system/libraries/Encrypt.php
+++ b/system/libraries/Encrypt.php
@@ -165,7 +165,7 @@ class CI_Encrypt {
*/
public function decode($string, $key = '')
{
- if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string))
+ if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string) || base64_encode(base64_decode($string)) !== $string)
{
return FALSE;
}