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Net::CIDR::Set versions 0.10 through 0.13 for Perl does not properly handle leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses. Leading zeros are used to indicate octal numbers, which can confuse users who are intentionally using octal notation, as well as users who believe they are using decimal notation. Net::CIDR::Set used code from Net::CIDR::Lite, which had a similar vulnerability CVE-2021-47154.
Reserved 2025-04-16 | Published 2025-05-27 | Updated 2025-05-28 | Assigner CPANSecCWE-1287 Improper Validation of Specified Type of Input
metacpan.org/release/RRWO/Net-CIDR-Set-0.14/changes
github.com/...be7d91e8446ad8013b08b4be313d666dab003a8a.patch
blog.urth.org/...security-issues-in-perl-ip-address-distros/
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