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EUVD-2026-324673

fkie_cve-2026-49942

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks.

The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks.

Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.

GHSA-fff7-gx98-vr3g

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks.

The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks.

Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.

UBUNTU-CVE-2026-49942

Affected: Ubuntu:20.04:LTS: libnet-cidr-set-perl, Ubuntu:22.04:LTS: libnet-cidr-set-perl, Ubuntu:24.04:LTS: libnet-cidr-set-perl, Ubuntu:25.10: libnet-cidr-set-perl, Ubuntu:26.04:LTS: libnet-cidr-set-perl

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks. The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks. Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.