ResolutionParallels Plesk Panel 8.6.0 Micro-Update #6 for Linux was made available on September 29, 2011 through Plesk Panel Autoinstaller.
Product functional fixes:
[-] HTTPOnly flag added for the session cookie
[-] XSS injection in “Location” HTTP header
Additional informationFor more information about the Micro-Update installation procedure, see the article:
#9294 Using Micro-Updates in Parallels Plesk Panel 9.x, 10.x and Parallels Small Business Panel