CVE-2026-45190 — Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may all…

Affected: STIGTSP Net::CIDR::Lite

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass.

Inputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result.

Example:

my $cidr = Net::CIDR::Lite->new(); $cidr->add("::1\n/128"); $cidr->find("::1a"); # incorrectly returns true

USN-8453-1 — libnet-cidr-lite-perl vulnerabilities

Affected: Ubuntu:Pro:16.04:LTS: libnet-cidr-lite-perl, Ubuntu:Pro:18.04:LTS: libnet-cidr-lite-perl, Ubuntu:Pro:20.04:LTS: libnet-cidr-lite-perl, Ubuntu:22.04:LTS: libnet-cidr-lite-perl, Ubuntu:24.04:LTS: libnet-cidr-lite-perl, Ubuntu:25.10: libnet-cidr-lite-perl, Ubuntu:26.04:LTS: libnet-cidr-lite-perl

It was discovered that Net::CIDR::Lite incorrectly validated IP address and CIDR mask inputs. An attacker could possibly use this issue to bypass IP access control lists. (CVE-2026-45190)

It was discovered that Net::CIDR::Lite incorrectly handled extraneous zero characters in CIDR mask values. An attacker could possibly use this issue to bypass IP access control lists. (CVE-2026-45191)

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CVE-2026-45190 — Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may all…

USN-8453-1 — libnet-cidr-lite-perl vulnerabilities