Medium: perl-Net-CIDR-Lite

Issue Overview: Net::CIDR::Lite versions before 0.23 for Perl does not validate IPv6 group count, which may allow IP ACL bypass. packipv6 does not check that uncompressed IPv6 addresses without :: have exactly 8 hex groups. Inputs like "abcd", "1:2:3", or "1:2:3:4:5:6:7" are accepted and produce...

CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

CVE-2026-40199

The Net::CIDR::Lite Perl module (versions before 0.23 ) contains a vulnerability where it mishandles IPv4 mapped IPv6 addresses (e.g., ::ffff:192.168.1.1). The _pack_ipv6() function incorrectly includes a sentinel byte from _pack_ipv4(), resulting in an 18-byte value instead of 17 bytes. This mis...

CVE-2026-40198

Net::CIDR::Lite versions before 0.23 for Perl does not validate IPv6 group count, which may allow IP ACL bypass. packipv6 does not check that uncompressed IPv6 addresses without :: have exactly 8 hex groups. Inputs like "abcd", "1:2:3", or "1:2:3:4:5:6:7" are accepted and produce packed values of...

PT-2026-32048

Name of the Vulnerable Software and Affected Versions Net::CIDR::Lite versions prior to 0.23 Description The Net::CIDR::Lite Perl module before version 0.23 does not properly validate the IPv6 group count, potentially allowing a bypass of IP Access Control Lists ACLs. Recommendations Update to...