comment_post_ID 0 (cannot remove from dashboard)

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Ran across something a bit odd that I haven’t seen before. A client has a pretty active blog and uses Akismet (paid) to protect against spam. At least once a day, they’re reporting a spam comment that is correctly marked as spam, but cannot be removed from the admin dashboard by clicking Empty Spam or manually selecting the entry and trying to delete it.

I looked into this and noticed that the DB entry has a comment_post_ID of 0, which I’d have to assume means it is not attached to any post. I can obviously remove them manual from the DB (and it works just fine), but haven’t found any information on what this could be.

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I’ve replaced the core WP files (thinking it might be a security issue) and also re-generated the salts/keys in the wp-config.php file without any change.

Any thoughts would be a huge help. thanks!

Update

While this may have stemmed from, I’m not sure if it is the result of the InMotion hack.

Here’s what’s been done:

  • Changed FTP, MySQL passwords
  • Created new DB user, assigned to database
  • Updated salts/keys in wp-config.php
  • Changed all WP user passwords
  • Re-installed core WordPress files

Akismet is out of ideas on this one (don’t blame them) as this one is persistent.

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1 comment

  1. I’m sorry can’t comment here but i’ll try to help.

    wp_handle_comment_submission function handing comments posting contains exact check for post_id:

        $post = get_post( $comment_post_ID );

    if ( empty( $post->comment_status ) ) {
         ...
       return error_happened; 
    }

    i.e.
    (1) it passes through , or
    (2) comment was added other than default way of posting comments.

    For (1) – check that post with id=0 doesnt exists in db, wp_posts table. Sometimes failures in database cause presence of such records