Version change

$to parameter being erased by extract()

Fixed issues with possible overriding $to param

CHANGELOG.md

@@ -1,5 +1,8 @@
 Changelog
 =========
+1.8.8 (2022-12-11)
+- Fixed bug when `$to` override in the `wp_mail` function
+
 1.8.7 (2022-11-12)
 - Fixed bug when field `Override "From" Details` was not updated
 

includes/wp-mail-api.php

@@ -112,13 +112,6 @@ function mg_mutate_to_rcpt_vars_cb($to_addrs)
 if (!function_exists('wp_mail')) {
     function wp_mail($to, $subject, $message, $headers = '', $attachments = array())
     {
-        // Compact the input, apply the filters, and extract them back out
-        $extractData = apply_filters('wp_mail', compact('to', 'subject', 'message', 'headers', 'attachments'));
-        if (!is_array($extractData)) {
-            $extractData = (array)$extractData;
-        }
-        extract($extractData, EXTR_OVERWRITE);
-
         $mailgun = get_option('mailgun');
         $region = (defined('MAILGUN_REGION') && MAILGUN_REGION) ? MAILGUN_REGION : $mailgun['region'];
         $apiKey = (defined('MAILGUN_APIKEY') && MAILGUN_APIKEY) ? MAILGUN_APIKEY : $mailgun['apiKey'];
@@ -129,7 +122,7 @@ function wp_mail($to, $subject, $message, $headers = '', $attachments = array())
         }
 
         // If a region is not set via defines or through the options page, default to US region.
-        if (!((bool)$region)) {
+        if (!($region)) {
             error_log('[Mailgun] No region configuration was found! Defaulting to US region.');
             $region = 'us';
         }
@@ -256,7 +249,7 @@ function wp_mail($to, $subject, $message, $headers = '', $attachments = array())
             } elseif (is_array($body['o:tag'])) {
                 $body['o:tag'] = array_merge($body['o:tag'], $tags);
             } else {
-                $body['o:tag'] .= ',' . $tags;
+                $body['o:tag'] .= ',' . implode(',', $tags);
             }
         }
 

mailgun.php

@@ -3,11 +3,11 @@
  * Plugin Name:  Mailgun
  * Plugin URI:   http://wordpress.org/extend/plugins/mailgun/
  * Description:  Mailgun integration for WordPress
- * Version:      1.8.7
+ * Version:      1.8.8
  * Tested up to: 6.1
  * Author:       Mailgun
  * Author URI:   http://www.mailgun.com/
- * License:      GPLv2 or later
+ * License:      GPLv2 or late
  * Text Domain:  mailgun
  * Domain Path:  /languages/.
  */

readme.md

@@ -5,7 +5,7 @@ Contributors: mailgun, sivel, lookahead.io, m35dev
 Tags: mailgun, smtp, http, api, mail, email
 Requires at least: 3.3
 Tested up to: 6.1
-Stable tag: 1.8.7
+Stable tag: 1.8.8
 Requires PHP: 5.6
 License: GPLv2 or later
 
@@ -130,6 +130,9 @@ MAILGUN_FROM_ADDRESS Type: string
 
 
 == Changelog ==
+= 1.8.8 (2022-12-11): =
+- Fixed bug when `$to` override in the `wp_mail` function
+
 = 1.8.7 (2022-11-12): =
 - Fixed bug when field `Override "From" Details` was not updated
 

readme.txt

@@ -5,7 +5,7 @@ Contributors: mailgun, sivel, lookahead.io, m35dev
 Tags: mailgun, smtp, http, api, mail, email
 Requires at least: 4.4
 Tested up to: 6.1
-Stable tag: 1.8.7
+Stable tag: 1.8.8
 Requires PHP: 5.6
 License: GPLv2 or later