Are they just an issue with wefwef or trying to use an exploit

    • 𝘋𝘪𝘳𝘬@lemmy.ml
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      1 year ago

      To prevent execution of scripts not referenced with the correct nonce:

      script-src 'self' 'nonce-$RANDOM'
      

      To make it super strict, this set could be used:

      default-src 'self';
      script-src 'nonce-$RANDOM'
      object-src 'none';
      base-uri 'none';
      form-action 'none';
      frame-ancestors 'none';
      frame-src 'none';
      require-trusted-types-for 'script'
      

      Especially the last one might cause the most work, because the “modern web development environment” simply cannot provide this. Also: form-action 'none'; should be validated. It should be set to self if forms are actually used to send data to the server and not handled by Javascript.

      The MDN has a good overview: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy