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