{"id":"CVE-2026-45191","summary":"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","details":"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.\n\nMask forms like \"/00\" and \"/01\" pass validation and parse to the same prefix as their unpadded value.\n\nSee also CVE-2026-45190.","modified":"2026-05-30T23:29:16.701898342Z","published":"2026-05-10T20:15:53.897Z","related":["SUSE-SU-2026:2113-1","openSUSE-SU-2026:10780-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45191.json","cwe_ids":["CWE-1289"],"cna_assigner":"CPANSec"},"references":[{"type":"WEB","url":"https://cpan.org/modules"},{"type":"WEB","url":"https://www.cve.org/CVERecord?id=CVE-2026-45190"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45191.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45191"},{"type":"FIX","url":"https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch"},{"type":"PACKAGE","url":"https://github.com/stigtsp/Net-CIDR-Lite"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/stigtsp/net-cidr-lite","events":[{"introduced":"0"},{"fixed":"f5a20ecc59bdf23c4104a55e7f01a8c7729b7fc5"}]}],"versions":["0.23","0.22","0.21"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45191.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"}]}