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.
cpansearch.perl.org/src/RJBS/PathTools-3.62/Changes
lists.fedoraproject.org/pipermail/package-announce/2016-January/175494.html
lists.fedoraproject.org/pipermail/package-announce/2016-January/176228.html
lists.opensuse.org/opensuse-updates/2016-03/msg00112.html
www.debian.org/security/2016/dsa-3441
www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
www.securityfocus.com/bid/80504
www.securitytracker.com/id/1034772
www.ubuntu.com/usn/USN-2878-1
h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
rt.perl.org/Public/Bug/Display.html?id=126862
security.gentoo.org/glsa/201701-75
www.oracle.com/security-alerts/cpujul2020.html