The InfiniteWP Client plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.13.0 via the 'historyID' parameter of the ~/debug-chart/index.php file. This makes it possible for unauthenticated attackers to read .txt files outside of the intended directory.

The InfiniteWP Client plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.12.3 via the multi-call backup option. This makes it possible for unauthenticated attackers to extract sensitive data from a temporary SQL file via repeated GET requests during the limited time window of the backup process.

The InfiniteWP Client plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.11.1 via the 'adminnotice' function. This can allow authenticated attackers with subscriber-level permissions or above to extract sensitive data including configuration. It can only be exploited if the plugin has not been configured yet. If combined with another arbitrary plugin installation and activation vulnerability, it may be possible to connect a site to InfiniteWP which would make remote management possible and allow for elevation of privileges.

The InfiniteWP Client plugin before 1.9.4.5 for WordPress has a missing authorization check in iwpmmbsetrequest in init.php. Any attacker who knows the username of an administrator can log in.