[Koha] Bug in mainpage.pl?

[Angel]

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Hello all.

I've just installed kohan on Debian Jessie, I'm testing and
configuring, sometimes I get screen warning to not connect to server.
In intranet-error.log I can see errors in cgi:

"search.pl: CGI::param called in list context from package main line
169, this can lead to vulnerabilities. See the warning in "Fetching
the value or values of a single named parameter" at
/usr/share/perl5/CGI.pm line 436."

I was searchig for the warning, and it seems that mainpage.pl in
koha-common needs to be fixed, but I don't know how. Or perhaps there
is other way avoid the error.

REgards and thanks in advanced

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