The Loan Comparison plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'loancomparison' shortcode in all versions up to, and including, 2.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Loan Comparison WordPress plugin before 1.5.3 does not validate and escape some of its query parameters before outputting them back in a page/post via an embedded shortcode, which could allow an attacker to inject javascript into into the site via a crafted URL.

The Loan Comparison WordPress plugin before 1.5.3 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks