The CookieYes WordPress plugin before 3.5.8 does not correctly restrict who can write its cookie-category script fields, and does not sanitize or escape them, allowing users with the Contributor role to store JavaScript that executes in the browsers of site visitors and of an administrator reviewing the content.

The CookieYes WordPress plugin before 3.5.8 does not correctly restrict who can write its cookie-category script fields, and does not sanitize or escape them, allowing users with the Contributor role to store JavaScript that executes in the browsers of site visitors and of an administrator reviewing the content.