CVE-2026-45191

The perl-Net-CIDR-Lite module (versions before 0.24 ) contains a vulnerability where it fails to properly validate IP address and CIDR mask inputs . Specifically, the component does not account for extraneous zero characters in mask values (e.g., "/00" or "/01" ), which pass validation and parse ...

CVE-2026-45191 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

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...

Linux Distros Unpatched Vulnerability : CVE-2021-4456

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Net::CIDR versions before 0.24 for Perl mishandle leading zeros in IP CIDR addresses, which may have unspecified impact. The functions addr2cidr and cidrlookup...

SUSE CVE-2006-6944

phpMyAdmin before 2.9.1.1 allows remote attackers to bypass Allow/Deny access rules that use IP addresses via false headers...

SUSE CVE-2021-29662

The Data::Validate::IP module through 0.29 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which in some situations allows attackers to bypass access control that is based on IP addresses...

UBUNTU-CVE-2021-29921

In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This in some situations allows attackers to bypass access control that is based on IP addresses...