The canonpath function in the File::Spec module in PathTools before 3.62, as used in Perl, does not properly preserve the taint attribute of data, which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.
https://www.oracle.com/security-alerts/cpujul2020.html
https://security.gentoo.org/glsa/201701-75
https://rt.perl.org/Public/Bug/Display.html?id=126862
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
http://www.ubuntu.com/usn/USN-2878-1
http://www.securitytracker.com/id/1034772
http://www.securityfocus.com/bid/80504
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
http://www.debian.org/security/2016/dsa-3441
http://lists.opensuse.org/opensuse-updates/2016-03/msg00112.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176228.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175494.html