A use-after-free issue exists in WebKitGTK before 2.28.1 and WPE WebKit before 2.28.1 via crafted web content that allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash).
https://wpewebkit.org/security/WSA-2020-0004.html
https://webkitgtk.org/security/WSA-2020-0004.html
https://usn.ubuntu.com/4331-1/
https://security.gentoo.org/glsa/202006-08
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html