The Layouts for WPBakery plugin for WordPress is vulnerable to unauthorized actions due to a missing capability check on the `Layouts_WPB_Remote::template_sync()` callback registered via `wp_ajax_nopriv_handle_sync` in all versions up to, and including, 1.1.3. This makes it possible for unauthenticated attackers to force the WordPress server to issue outbound HTTP requests to the plugin vendor's external API (`https://www.layoutsforwpbakery.com/wp-json/layoutsforwpbakery/v1/{templates,categories}`) and to write the JSON-decoded responses verbatim into the site's `wp_options` table via `set_transient()` — at any rate the attacker chooses, with no nonce verification, capability check, or rate limiting.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://plugins.trac.wordpress.org/browser/layouts-for-wpbakery/trunk/includes/…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/layouts-for-wpbakery/trunk/includes/…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/layouts-for-wpbakery/trunk/includes/…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?new=3543686%40layouts-for-wpbakery…
security@wordfence.com
https://wordpress.org/plugins/layouts-for-wpbakery/
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/2beaf82f-3709-48de-bc…
security@wordfence.com