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hereswhatidid/disable-long-comments.php

Created April 27, 2015 18:16
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WordPress 4.2 comment fix - this will disable any comment over a certain lenght that could theoretically trigger the XSS vulnerability.
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disable-long-comments.php
<?php
add_filter( 'pre_comment_content', function( $content ) {
if ( strlen( $content ) > 64000 )
wp_die( 'Invalid comment.' );
return $content;
} );
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