A gssproxy bugfix update has been released for CentOS 7.

CEBA-2021:2329 CentOS 7 gssproxy BugFix Update

CentOS Errata and Bugfix Advisory 2021:2329

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:2329

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

x86_64:
dfe598bbcefc64fd6bb542cf6d1966fef6a3995e68fa2b6cc2ed34220ca65ee8 gssproxy-0.7.0-30.el7_9.x86_64.rpm

Source:
0d0aad2101727ce3b1fd7944ae62d94dc2ec9d09de4120472519560dc43f7049 gssproxy-0.7.0-30.el7_9.src.rpm