The following updates has been released for CentOS 7:

CEBA-2019:2871 CentOS 7 tzdata BugFix Update
CESA-2019:2836 Important CentOS 7 dovecot Security Update

CEBA-2019:2871 CentOS 7 tzdata BugFix Update

CentOS Errata and Bugfix Advisory 2019:2871

Upstream details at : https://access.redhat.com/errata/RHBA-2019:2871

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

x86_64:
a467bd14a5f0fec9e6227eae6aac92c155947a102e818c2bb62e2339e44a694a tzdata-2019c-1.el7.noarch.rpm
ef0c0ac7183772b70ee519f5b9c4664f37edd34d991abe4bf3c267d88cc4c253 tzdata-java-2019c-1.el7.noarch.rpm

Source:
b42bbcf8f971442bc4d38d31f77a89a73cca3d7b1d5c4367d7c1a9f0d9154447 tzdata-2019c-1.el7.src.rpm

CESA-2019:2836 Important CentOS 7 dovecot Security Update

CentOS Errata and Security Advisory 2019:2836 Important

Upstream details at : https://access.redhat.com/errata/RHSA-2019:2836

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

x86_64:
11077bf3f1d84c1f6859b8fa47c9392fcd509f8d6bc7b9b988e6ed7577ed04f8 dovecot-2.2.36-3.el7_7.1.i686.rpm
b81be38ea93b76f4842626b0b3e2a1f475a961eca4438675ce1e55617e0ac97f dovecot-2.2.36-3.el7_7.1.x86_64.rpm
f0d0108c698ce4b5dd8b367e06b915582fc48afb1badc122e309786dd38674ed dovecot-devel-2.2.36-3.el7_7.1.x86_64.rpm
2ad9278d2b13cfe896e2d5a0e5b30e1bd5b223f3167c5590fe2005db80d47aa9 dovecot-mysql-2.2.36-3.el7_7.1.x86_64.rpm
4a989a65d5f0f14d8e06683f4d14b374f7b97b4267d44d23f965fec9437264b4 dovecot-pgsql-2.2.36-3.el7_7.1.x86_64.rpm
8563c958aead11645fb2f533b6b5b39360c8dc00fbe95c3819ca674ccabdcc66 dovecot-pigeonhole-2.2.36-3.el7_7.1.x86_64.rpm

Source:
e264fd90d0575f43751eb67b564a5da31dad31b8ad784219340e151fac9d7e52 dovecot-2.2.36-3.el7_7.1.src.rpm