The WPeMatico RSS Feed Fetcher WordPress plugin before 2.8.27 does not sanitize imported feed content before storing it as post content, allowing users with the Contributor role and above to perform Stored Cross-Site Scripting attacks.
The WPeMatico RSS Feed Fetcher WordPress plugin before 2.8.26 does not sanitize and escape content it retrieves from a user-supplied source before rendering it, which could allow users such as contributors to perform Stored Cross-Site Scripting attacks against higher-privileged users who review the campaign.