A mutter bugfix update has been released for CentOS 7.

CentOS-announce: CEBA-2020:2093 CentOS 7 mutter BugFix Update

CentOS Errata and Bugfix Advisory 2020:2093

Upstream details at :   https://access.redhat.com/errata/RHBA-2020:2093

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

x86_64:
11762d3240b410cfb2f0d0a3a579a6c2d06d30bb010a35a61a2f502002697021 mutter-3.28.3-22.el7_8.i686.rpm
90164b6fe10ca8940d0b71a7b9b5044dea7ce23a4047a25b2ea29aecc2b06673 mutter-3.28.3-22.el7_8.x86_64.rpm
e24858d50ce115656df3f117f7cb617535cbed6dc3c6e54f438b880e89e44be6 mutter-devel-3.28.3-22.el7_8.i686.rpm
6fc6b65f8e1d527f80f1f42098bbb2e3f20c2959d08990e4831299d72d51564d mutter-devel-3.28.3-22.el7_8.x86_64.rpm

Source:
043b5f65b9cd98fbe4ac5d259f7355cb2df386f59bc5b448e1f69f3286c66ec5 mutter-3.28.3-22.el7_8.src.rpm