CVE-2026-16750

The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'stm_lat/stm_lng' parameter in all versions up to, and including, 1.4.109 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The Motors – Car Dealership & Classified Listings plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'stm_f_s' parameter in all versions up to, and including, 1.4.124 due to insufficient input sanitization and output escaping. Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts that execute when a user accesses an injected page; the nonce required by the stm_ajax_add_a_car AJAX handler is emitted in wp_footer on every page, making it accessible to any authenticated user.

The Motors – Car Dealership & Classified Listings plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content and User Biographical Info in all versions up to, and including, 1.4.112 due to insufficient input sanitization and output escaping.

The Motors – Car Dealership & Classified Listings plugin for WordPress up to version 1.4.111 is vulnerable to authorization bypass. An authenticated attacker with subscriber-level access can mark or unmark any other user's car listing as sold by replaying a valid nonce from their own listing.