CentOS Errata and Enhancement Advisory 2015:0275 

Upstream details at : https://rhn.redhat.com/errata/RHEA-2015-0275.html

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

i386:
dd29d23eccd0d884980bc486eed5898294616b5f1698644409e5ec0e5b0eec28  cyrus-imapd-2.3.7-16.el5_11.i386.rpm
424a0ef95930ae543fec2c8415be603232330050651f70493f148133ced97381  cyrus-imapd-devel-2.3.7-16.el5_11.i386.rpm
ba67ad052b541adb36b0f8f1ae395b5ab5621f7860fdac559c08ae8cedd02148  cyrus-imapd-perl-2.3.7-16.el5_11.i386.rpm
0309b20c3f0672234fdd6c831ac425be8de30c2e1f2e3e40a66b708224e37762  cyrus-imapd-utils-2.3.7-16.el5_11.i386.rpm

x86_64:
f6fa3aed83cfd51c8bb41c2cf9b9c6c3f3b5a6212feae5ea70f21f9a777e01be  cyrus-imapd-2.3.7-16.el5_11.x86_64.rpm
424a0ef95930ae543fec2c8415be603232330050651f70493f148133ced97381  cyrus-imapd-devel-2.3.7-16.el5_11.i386.rpm
b01915f3ac66d050a0707518fb798891b1e6dd27e98eb7f529c315b23bb2469f  cyrus-imapd-devel-2.3.7-16.el5_11.x86_64.rpm
85f3ad6fefeaf3f0e104a98e305f1d45cc3caa998ee11d50d86da6f2ce6aa088  cyrus-imapd-perl-2.3.7-16.el5_11.x86_64.rpm
8bdcac1856535d4972f6c0d955f784af66d0c62b1027ae299e76895245990ec5  cyrus-imapd-utils-2.3.7-16.el5_11.x86_64.rpm

Source:
646f5530c92f50b0f248e2469af4795a46825dbec4e8bef9f5c44685241a76b4  cyrus-imapd-2.3.7-16.el5_11.src.rpm