Description
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.
References (3)
Core 3
Core References
Patch patch
https://github.com/robrwo/perl-Net-CIDR-Set/commit/be7d91e8446ad8013b08b4be313d666dab003a8a.patch
Various Sources related
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
Release Notes release-notes
https://metacpan.org/release/RRWO/Net-CIDR-Set-0.14/changes
Scores
CVSS v3
6.5
EPSS
0.0031
EPSS Percentile
22.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1287
Status
published
Products (1)
RRWO/Net::CIDR::Set
0.10 - 0.13
Published
May 27, 2025
Tracked Since
Feb 18, 2026