WebKitGTK+ is vulnerable to arbitrary code execution. A memory corruption issue allows an attacker to execute arbitrary code on the host OS.
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index
access.redhat.com/errata/RHSA-2020:4035
access.redhat.com/security/updates/classification/#moderate
support.apple.com/HT209599
support.apple.com/HT209601
support.apple.com/HT209602
support.apple.com/HT209603
support.apple.com/HT209604
support.apple.com/HT209605