Output validation vulnerability in Boldermail – Email Marketing and Newsletters for WordPress 2.4.0

A popular add-on for the website building platform WordPress, called Boldermail, has a security issue that could allow hackers to inject malicious code. This vulnerability affects versions 2.4.0 and lower, and can only be exploited by users who have contributor-level access or higher. There is no known way to exploit this vulnerability on its own, but if the website has additional plugins or themes installed, it could be used to access sensitive information or delete important files.