The Data::Validate::IP module through 0.29 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.
blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
github.com/houseabsolute/Data-Validate-IP
github.com/houseabsolute/Data-Validate-IP/commit/3bba13c819d616514a75e089badd75002fd4f14e
github.com/sickcodes/security/blob/master/advisories/SICK-2021-018.md
security.netapp.com/advisory/ntap-20210604-0002/
sick.codes/sick-2021-018/