A mutter bugfix update has been been released for CentOS 7.

CentOS-announce: CEBA-2020:5154 CentOS 7 mutter BugFix Update

CentOS Errata and Bugfix Advisory 2020:5154

Upstream details at :   https://access.redhat.com/errata/RHBA-2020:5154

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

x86_64:
eb48815ca014d65a115c0ac9dba6f0c28dc765fbc161fc9ac11d3573786c6b4a mutter-3.28.3-30.el7.i686.rpm
42bfea454da2eacfb32d84a41908a2e6d89c8e46d04ea6a5ccefa5e251b3f3f9 mutter-3.28.3-30.el7.x86_64.rpm
ca6edad606ed1ae0aad8a9ae177f501264d15718f85d304957942d0ed5768647 mutter-devel-3.28.3-30.el7.i686.rpm
2b4e66ff61ba4a7722ed44b9ca9487b146ddcbe7bc27c08a8b07be8049b546e7 mutter-devel-3.28.3-30.el7.x86_64.rpm

Source:
82a4e302b32ea01c09871d4ecca9b3c7a43c555ad56b6805d4bb3f9699c0178f mutter-3.28.3-30.el7.src.rpm