patch XSS, injection vuln

packages/pl-fe/src/pages/utils/about.tsx

@@ -1,3 +1,4 @@
+import DOMPurify from 'isomorphic-dompurify';
 import React, { useState } from 'react';
 import { FormattedMessage } from 'react-intl';
 
@@ -57,7 +58,7 @@ const About: React.FC<IAbout> = ({ slug }) => {
     <div>
       <Card variant='rounded'>
         <div className='prose mx-auto py-4 dark:prose-invert sm:p-6'>
-          {pageHtml && <div dangerouslySetInnerHTML={{ __html: pageHtml }} />}
+          {pageHtml && <div dangerouslySetInnerHTML={{ __html: DOMPurify.sanitize(pageHtml, { USE_PROFILES: { html: true } }) }} />}
           {alsoAvailable}
         </div>
       </Card>