Upgrade Perl5.2.20 (vulnerable)

[JosC]

Can someone tell me how to best upgrade from Perl5.20.x to the latest 
stable version?

Tried to upgrade to Perl5.22 but got (also) the same issue while doing so:


===>  Cleaning for perl5-5.20.3_14
===>  perl5-5.20.3_14 has known vulnerabilities:
perl5-5.20.3_14 is vulnerable:
p5-XSLoader -- local arbitrary code execution
CVE: CVE-2016-6185
WWW: 
https://vuxml.FreeBSD.org/freebsd/3e08047f-5a6c-11e6-a6c3-14dae9d210b8.html

perl5-5.20.3_14 is vulnerable:
perl -- local arbitrary code execution
CVE: CVE-2016-1238
WWW: 
https://vuxml.FreeBSD.org/freebsd/72bfbb09-5a6a-11e6-a6c3-14dae9d210b8.html

1 problem(s) in the installed packages found.
=> Please update your ports tree and try again.
=> Note: Vulnerable ports are marked as such even if there is no update 
available.
=> If you wish to ignore this vulnerability rebuild with 'make 
DISABLE_VULNERABILITIES=yes'
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/lang/perl5.20
*** Error code 1

Stop.
make: stopped in /usr/ports/lang/perl5.20

--- cut ---


Thanks,
Jos Chrispijn