Several vulnerabilities were discovered in Wordpress, a web blogging tool. They allowed remote attackers to perform SQL injections and various Cross-Side Scripting (XSS) and Server-Side Request Forgery (SSRF) attacks, as well as bypass some access restrictions.
For the oldstable distribution (jessie), these problems have been fixed in version 4.1+dfsg-1+deb8u16.
For the stable distribution (stretch), these problems have been fixed in version 4.7.5+dfsg-2+deb9u2.
We recommend that you upgrade your wordpress packages.