2.8.6 repairs 2 protection troubles that can be manipulated by signed up, visited individuals that have publishing advantages. If you have untrusted writers on your blog site, updating to 2.8.6 is advised.
The initial trouble is an XSS susceptability in Press This found by Benjamin Flesch. The 2nd trouble, found by Dawid Golunski, is a concern with disinfecting uploaded documents names that can be manipulated in particular Apache arrangements. Many thanks to Benjamin as well as Dawid for searching for as well as reporting these.