"Evil Code" error?

[Jon Wilmoth]

We've been experiencing problems with our Bugzilla server (disk space
and other) and finally had to reboot the machine.  I'm now seeing the
following message in the apache error_log:

Evil code attempted to write 'insert into logincookies (userid,ipaddr)
values (131, '204.238.150.136')' to the shadow database at
/usr/local/lib/perl5/5.6.1/CGI
/Carp.pm line 301.

This sounds bad...how concerned should I be?