WebKitGTK+ is vulnerable to arbitrary code execution. An attacker can input malicious web content to lead to memory corruptions and arbitrary code execution.
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/HT210346
support.apple.com/HT210348
support.apple.com/HT210351
support.apple.com/HT210355
support.apple.com/HT210356
support.apple.com/HT210357
support.apple.com/HT210358