[Yum] Info about updates

[Maksim A. Boyko]

Hi,

Where and how one can find addition information (like bugfix,
security,  update etc) about packages from updates with help yum API?
I'm interesting in the CentOS 6.5, 6.6 and 7.

I found that there is yum-plugin-security but it does not work well
for 6.5 and 6.6.  I have already seen the code of UpdateinfoCommand
from /usr/share/yum-cli/yumcommands.py . That code is hard to
understand.  May be there are simple code examples ?

-- 
Best regards, Maksim A. Boyko