No support for base64 images?

  • Resolved nicmare

    (@nicmare)


    1 year, 2 months ago

    I embed images as base64 encoded string in the html-emails. This works great in any email client. But when i take a look into the protocol of wp mail logging and open a sent email, the “data” is removed from the image string. But it’s needed to render the image:

    Is it something what WordPress changed or is it your plugin for some security issues?!

    before: data:image/png;base64,…

    after: image/png;base64,…

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  • Thread Starter nicmare

    (@nicmare)

    1 year, 2 months ago

    ah never mind. found the reason! it’s wp_kses in line 154 of file EmailLogsTab.php. It filters the data-protocol. To allow it, simply add this code to functions.php:

    add_filter('kses_allowed_protocols', function ($protocols) {
    $protocols[] = 'data';

    return $protocols;
});
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