Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in WpMultiStoreLocator WP Multi Store Locator allows Reflected XSS. This issue affects WP Multi Store Locator: from n/a through 2.4.7.

The WP Multi Store Locator plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.4.1 due to insufficient input sanitization and output escaping. 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 Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The WP Multi Store Locator WordPress plugin through 2.4 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