Premium Addons For Kingcomposer
Monthly
Unauthenticated sidebar manipulation in the Premium Addons for KingComposer WordPress plugin (versions up to and including 1.1.1) allows any remote attacker to create arbitrary custom widget areas or permanently delete existing ones without any credentials. The root cause is that the AJAX handlers add_custom_sidebar() and remove_custom_sidebar() are registered under wp_ajax_nopriv_* hooks with no authorization or capability checks, granting public HTTP access to options-table writes via update_option(). Deletion of sidebars silently breaks widget rendering site-wide, and no public exploit has been identified at time of analysis; no CISA KEV listing is present.
Unauthenticated sidebar manipulation in the Premium Addons for KingComposer WordPress plugin (versions up to and including 1.1.1) allows any remote attacker to create arbitrary custom widget areas or permanently delete existing ones without any credentials. The root cause is that the AJAX handlers add_custom_sidebar() and remove_custom_sidebar() are registered under wp_ajax_nopriv_* hooks with no authorization or capability checks, granting public HTTP access to options-table writes via update_option(). Deletion of sidebars silently breaks widget rendering site-wide, and no public exploit has been identified at time of analysis; no CISA KEV listing is present.