The following updates has been released for CentOS:
CEBA-2019:0689 CentOS 6 tzdata BugFix UpdateTzData, Firefox, LibSSH, Thunderbird Updates for CentOS
CEBA-2019:0689 CentOS 7 tzdata BugFix Update
CESA-2019:0671 Critical CentOS 7 firefox Security Update
CESA-2019:0672 Critical CentOS 6 firefox Security Update
CESA-2019:0679 Important CentOS 7 libssh2 Security Update
CESA-2019:0680 Important CentOS 6 thunderbird Security Update
CESA-2019:0681 Important CentOS 7 thunderbird Security Update