EUVD-2026-28999
GHSA-fw62-67j2-4wmc
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Lifecycle Timeline
5DescriptionNVD
Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass.
Mask forms like "/00" and "/01" pass validation and parse to the same prefix as their unpadded value.
See also CVE-2026-45190.
AnalysisAI
Net::CIDR::Lite before version 0.24 accepts CIDR mask values with extraneous leading zeros (such as '/00' or '/01'), causing them to parse identically to their unpadded equivalents ('/0' or '/1'). This permits attackers to bypass IP-based access control lists by supplying alternate representations of the same network prefix, potentially granting unauthorized access to restricted resources. …
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