An openssl security update has been released for CentOS 7.

CentOS-announce: CESA-2020:5566 Important CentOS 7 openssl Security Update

CentOS Errata and Security Advisory 2020:5566 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:5566

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

x86_64:
969eab9ba9b8ec436addf7c0e053780ff8e9fcafc51ae2195eee7d809f21dc64 openssl-1.0.2k-21.el7_9.x86_64.rpm
eb5ebcc220cbcdd1df7a8fd9b4c1dcc27b611af10741997070d522208153e79b openssl-devel-1.0.2k-21.el7_9.i686.rpm
96b2891b2db1ae3878909b85454b12d4f3bf98634a199e8944cd81886d37e424 openssl-devel-1.0.2k-21.el7_9.x86_64.rpm
15eee91d297a4a3b7715b991e5411fa38326f5c44b7a58895868067a828537da openssl-libs-1.0.2k-21.el7_9.i686.rpm
820567529a85b68ae8094f0be50f5116b0622ed1c526afa0e239f84b9bcb0860 openssl-libs-1.0.2k-21.el7_9.x86_64.rpm
d7327ee1af7919fb77069b475af28300ad4c73d10e840a156a1105e5099f1885 openssl-perl-1.0.2k-21.el7_9.x86_64.rpm
eee4cb71588d025d63ac9b8c966fe2a49c4d9ab89f23553fcb7e360eb7ef2343 openssl-static-1.0.2k-21.el7_9.i686.rpm
569c75b83fb8869babbff7da458924e4ef2a3cceabd9c1e5b1274d1d95ca521c openssl-static-1.0.2k-21.el7_9.x86_64.rpm

Source:
6dd850b2be01ff85c500428461019566984d91d7ad8d0002885d33ea37546da4 openssl-1.0.2k-21.el7_9.src.rpm