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-rw-r--r--lib/util.php4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/util.php b/lib/util.php
index efd86ad50..e14cc36ac 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -493,6 +493,10 @@ function common_munge_password($password, $id) {
# check if a username exists and has matching password
function common_check_user($nickname, $password) {
+ # NEVER allow blank passwords, even if they match the DB
+ if (mb_strlen($password) == 0) {
+ return false;
+ }
$user = User::staticGet('nickname', $nickname);
if (is_null($user)) {
return false;