This addresses several issues with webkitgtk 2.20.2: - CVE-2018-4190, information leak (credentials) - CVE-2018-4199, arbitrary code execution - CVE-2018-4218, arbitrary code execution - CVE-2018-4222, arbitrary code execution - CVE-2018-4232, cookies might be overriden - CVE-2018-4233, arbitrary code execution - CVE-2018-11646, application crash - CVE-2018-12293, heap buffer overflow