The Job Board by BestWebSoft plugin for WordPress is vulnerable to a security issue known as Reflected Cross-Site Scripting. This affects versions of the plugin prior to version 1.1.4. An unauthenticated attacker could inject malicious web scripts into a page on the website if they can trick a user into performing an action, such as clicking on a link. This is due to the plugin not properly sanitizing user input or escaping output.