Cross-Site Request Forgery (CSRF) vulnerability in Steve Availability Calendar allows Stored XSS. This issue affects Availability Calendar: from n/a through 0.2.4.

The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfilteredhtml is disallowed

The Availability Calendar WordPress plugin before 1.2.1 does not escape the category attribute from its shortcode before using it in a SQL statement, leading to a SQL Injection issue, which can be exploited by any user able to add shortcode to posts/pages, such as contributor+