Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory.
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.debian.org/security/2018/dsa-4347
https://usn.ubuntu.com/3834-2/
https://usn.ubuntu.com/3834-1/
https://support.apple.com/kb/HT209600
https://security.netapp.com/advisory/ntap-20190221-0003/
https://security.gentoo.org/glsa/201909-01
https://seclists.org/bugtraq/2019/Mar/42
https://rt.perl.org/Ticket/Display.html?id=133192
https://metacpan.org/changes/release/SHAY/perl-5.26.3
https://github.com/Perl/perl5/commit/43b2f4ef399e2fd7240b4eeb0658686ad95f8e62
https://bugzilla.redhat.com/show_bug.cgi?id=1646738
https://access.redhat.com/errata/RHSA-2019:0010
https://access.redhat.com/errata/RHSA-2019:0001