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The Content Egg – Affiliate Product Importer & Price Comparison plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 12.0.0 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to create posts attributed to another user's account — typically an administrator — by supplying an admin-owned preset_id, causing wp_insert_post to record the administrator as post_author. This includes the ability to create published posts when the attacker already holds publish_posts capability for the preset's post type, resulting in administrator-attributed published content created by a lower-privileged user.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/e179f0fc-6943-4e3b-9346-4604bd9c85bc?source=cve
• https://plugins.trac.wordpress.org/browser/content-egg/tags/12.0.0/application/admin/import/ImportQueueApi.php#L146
• https://plugins.trac.wordpress.org/browser/content-egg/tags/12.0.0/application/admin/import/ImportQueueApi.php#L65
• https://plugins.trac.wordpress.org/browser/content-egg/tags/12.0.0/application/admin/import/ProductImportService.php#L991
• https://plugins.trac.wordpress.org/browser/content-egg/tags/12.0.0/application/admin/import/ProductImportService.php#L1003
• https://plugins.trac.wordpress.org/changeset/3773366/content-egg/trunk/application/admin/import/ImportQueueApi.php