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-rw-r--r--services/userservice.php5
1 files changed, 3 insertions, 2 deletions
diff --git a/services/userservice.php b/services/userservice.php
index e50faaa..9b295da 100644
--- a/services/userservice.php
+++ b/services/userservice.php
@@ -393,8 +393,9 @@ class UserService {
if (strlen($username) > 24) {
// too long usernames are cut by database and may cause bugs when compared
return false;
- } else {
- return true;
+ } elseif (preg_match('/(\W)/', $username) > 0) {
+ // forbidden non-alphanumeric characters
+ return false;
}
return true;
}