diff --git a/wp-login.php b/wp-login.php
index 7bb53343d1..0197167f65 100644
--- a/wp-login.php
+++ b/wp-login.php
@@ -562,10 +562,25 @@ break;
 
 case 'resetpass' :
 case 'rp' :
-	$user = check_password_reset_key($_GET['key'], $_GET['login']);
+	list( $rp_path ) = explode( '?', wp_unslash( $_SERVER['REQUEST_URI'] ) );
+	$rp_cookie = 'wp-resetpass-' . COOKIEHASH;
+	if ( isset( $_GET['key'] ) ) {
+		$value = sprintf( '%s:%s', wp_unslash( $_GET['login'] ), wp_unslash( $_GET['key'] ) );
+		setcookie( $rp_cookie, $value, 0, $rp_path, COOKIE_DOMAIN, is_ssl(), true );
+		wp_safe_redirect( remove_query_arg( array( 'key', 'login' ) ) );
+		exit;
+	}
 
-	if ( is_wp_error($user) ) {
-		if ( $user->get_error_code() === 'expired_key' )
+	if ( isset( $_COOKIE[ $rp_cookie ] ) && 0 < strpos( $_COOKIE[ $rp_cookie ], ':' ) ) {
+		list( $rp_login, $rp_key ) = explode( ':', wp_unslash( $_COOKIE[ $rp_cookie ] ), 2 );
+		$user = check_password_reset_key( $rp_key, $rp_login );
+	} else {
+		$user = false;
+	}
+
+	if ( ! $user || is_wp_error( $user ) ) {
+		setcookie( $rp_cookie, ' ', time() - YEAR_IN_SECONDS, $rp_path, COOKIE_DOMAIN, is_ssl(), true );
+		if ( $user && $user->get_error_code() === 'expired_key' )
 			wp_redirect( site_url( 'wp-login.php?action=lostpassword&error=expiredkey' ) );
 		else
 			wp_redirect( site_url( 'wp-login.php?action=lostpassword&error=invalidkey' ) );
@@ -589,6 +604,7 @@ case 'rp' :
 
 	if ( ( ! $errors->get_error_code() ) && isset( $_POST['pass1'] ) && !empty( $_POST['pass1'] ) ) {
 		reset_password($user, $_POST['pass1']);
+		setcookie( $rp_cookie, ' ', time() - YEAR_IN_SECONDS, $rp_path, COOKIE_DOMAIN, is_ssl(), true );
 		login_header( __( 'Password Reset' ), '<p class="message reset-pass">' . __( 'Your password has been reset.' ) . ' <a href="' . esc_url( wp_login_url() ) . '">' . __( 'Log in' ) . '</a></p>' );
 		login_footer();
 		exit;
@@ -600,8 +616,8 @@ case 'rp' :
 	login_header(__('Reset Password'), '<p class="message reset-pass">' . __('Enter your new password below.') . '</p>', $errors );
 
 ?>
-<form name="resetpassform" id="resetpassform" action="<?php echo esc_url( site_url( 'wp-login.php?action=resetpass&key=' . urlencode( $_GET['key'] ) . '&login=' . urlencode( $_GET['login'] ), 'login_post' ) ); ?>" method="post" autocomplete="off">
-	<input type="hidden" id="user_login" value="<?php echo esc_attr( $_GET['login'] ); ?>" autocomplete="off" />
+<form name="resetpassform" id="resetpassform" action="<?php echo esc_url( site_url( 'wp-login.php?action=resetpass', 'login_post' ) ); ?>" method="post" autocomplete="off">
+	<input type="hidden" id="user_login" value="<?php echo esc_attr( $rp_login ); ?>" autocomplete="off" />
 
 	<p>
 		<label for="pass1"><?php _e('New password') ?><br />