PT-2026-39538 · Stigtsp · Net-Cidr-Lite
Published
2026-05-10
·
Updated
2026-05-10
·
CVE-2026-45190
None
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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
/128");
$cidr->find("::1a"); # incorrectly returns true
See also CVE-2026-45191.
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Weakness Enumeration
Related Identifiers
Affected Products
Net-Cidr-Lite