WordPress Plugin Supsystic Membership 1.4.7 SQL Injection via sidx

Supsystic Membership 1.4.7 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the 'search' and 'sidx' parameters. Attackers can send GET requests to the badges module with crafted payloads to extract sensitive database information using time-based blind or UNION-based SQL injection techniques.

Membership Add-on for iThemes Exchange before 1.3.0 for WordPress has XSS via add_query_arg() and remove_query_arg().