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-rw-r--r--src/wp-includes/user.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/wp-includes/user.php b/src/wp-includes/user.php
index 1e15b4b0ce..6d53726327 100644
--- a/src/wp-includes/user.php
+++ b/src/wp-includes/user.php
@@ -3172,7 +3172,7 @@ function retrieve_password( $user_login = '' ) {
$user_data = false;
// Use the passed $user_login if available, otherwise use $_POST['user_login'].
- if ( ! $user_login && ! empty( $_POST['user_login'] ) ) {
+ if ( ! $user_login && ! empty( $_POST['user_login'] ) && is_string( $_POST['user_login'] ) ) {
$user_login = $_POST['user_login'];
}