yum security update issue

Hi all,

I have used <a href="" title=""></a> plus <a href="" title=""></a> to insert
some security-information into my os-updates - mirror.

This seems to work, but only partially.

On my 7.4 test server,
The nss-packages are all of "severity = Important"

But there are more of this type of packages, e.g. emacs. The centos-announce mails as well as the
errata of Steve Meier as well as the generated updateinfo.xml all contain "CESA-2017:2771 Important
CentOS 7 emacs Security Update"
Just like the mentioned nss-packages, emacs is also labeled "severity = Important". But yum doesn't
like it ;-(

The output of
--> 1:emacs-24.3-20.el7_4.x86_64 from os-updates excluded (updateinfo)

Neither dnsmasq nor the nss-packages are listed, in particular not as excluded -?

And at the end it says

Btw, "yum info emacs" lists the installed and wanted emacs versions correctly.

What did I miss?