In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade wordpress | Feb 20, 2019 | Dec 14, 2018 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Dec 14, 2018 |
| Wordpress | — | Upgrade Wordpress to version 5.0.1 | Jan 15, 2019 | Dec 14, 2018 |
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