The Quiz Maker plugin for WordPress is vulnerable to time-based SQL Injection via the 'aysquestions' parameter in all versions up to, and including, 6.5.8.3 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.

Missing Authorization vulnerability in Quiz Maker team Quiz Maker.This issue affects Quiz Maker: from n/a through 6.3.9.4.

The Quiz Maker plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 6.7.0.80. This is due to the plugin exposing quiz answers through the aysquizcheckanswer AJAX action without proper authorization checks. The endpoint only validates a nonce, but that same nonce is publicly available to all site visitors via the quizmakerajaxpublic localized script data. This makes it possible for unauthenticated attackers to extract sensitive data including quiz answers for any quiz question.

The Quiz Maker plugin for WordPress is vulnerable to SQL Injection via spoofed IP headers in all versions up to, and including, 6.7.0.56 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. This is only exploitable in configurations where the server is set up to retrieve the IP from a user-supplied field like X-Forwarded-For and limit users by IP is enabled.