{"id":"CVE-2026-86287","state":"PUBLISHED","title":"Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths","description":"Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths.\n\nNon-numeric and non-ASCII prefix lengths are accepted and treated as 0. Integers over 31 bits are silently truncated.  A single malformed mask will poison the lookup table.\n\nThe result is that the lookup will silently succeed for every address. An allow-list will allow every address, and a deny-list will block every address.","publishedAt":"2026-09-07T18:25:37.140Z","updatedAt":"2026-09-08T18:40:45.091Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"CPANSec","products":["Net-IP-LPM"],"affected":[{"packageName":"Net-IP-LPM","packageURL":"pkg:cpan/Net-IP-LPM","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.12","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["Net::IP::LPM"],"programFiles":["lib/Net/IP/LPM.pm","LPM.xs","lpm_lib.c","lpm_lib.h"],"programRoutines":[{"name":"Net::IP::LPM::add"},{"name":"lpm_add_raw"}],"repo":"https://github.com/robrwo/perl-Net-IP-LPM"}],"references":["https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch","https://metacpan.org/release/RRWO/Net-IP-LPM-1.12/changes","http://www.openwall.com/lists/oss-security/2026/09/07/1"],"weaknesses":["CWE-1287"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/86xxx/CVE-2026-86287.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86287","state":"PUBLISHED","datePublished":"2026-09-07T18:25:37.140Z","dateUpdated":"2026-09-08T18:40:45.091Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-09-06T14:31:43.537Z"},"containers":{"cna":{"title":"Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths","descriptions":[{"lang":"en","value":"Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths.\n\nNon-numeric and non-ASCII prefix lengths are accepted and treated as 0. Integers over 31 bits are silently truncated.  A single malformed mask will poison the lookup table.\n\nThe result is that the lookup will silently succeed for every address. An allow-list will allow every address, and a deny-list will block every address."}],"affected":[{"packageName":"Net-IP-LPM","packageURL":"pkg:cpan/Net-IP-LPM","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.12","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["Net::IP::LPM"],"programFiles":["lib/Net/IP/LPM.pm","LPM.xs","lpm_lib.c","lpm_lib.h"],"programRoutines":[{"name":"Net::IP::LPM::add"},{"name":"lpm_add_raw"}],"repo":"https://github.com/robrwo/perl-Net-IP-LPM"}],"references":[{"url":"https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch","tags":["patch"]},{"url":"https://metacpan.org/release/RRWO/Net-IP-LPM-1.12/changes","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1287","description":"CWE-1287 Improper Validation of Specified Type of Input","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-09-07T18:25:37.140Z"},"solutions":[{"lang":"en","value":"Upgrade to Net::IP::LPM version 1.12 or later."}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/09/07/1"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-09-07T20:07:31.385Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T18:40:16.712696Z","id":"CVE-2026-86287","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-08T18:40:45.091Z"}}]}}}