{"id":"CVE-2026-86287","aliases":["EUVD-2026-72526","GHSA-456r-qjr2-xph9"],"status":"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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00609,"percentile":0.49451,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1287"],"published":"2026-09-07T18:25:37Z","modified":"2026-10-28T11:19:05Z","references":[{"url":"https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch","tags":["patch","fix"]},{"url":"https://metacpan.org/release/RRWO/Net-IP-LPM-1.12/changes","tags":["release-notes","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/07/1","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86287","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-456r-qjr2-xph9"},{"url":"https://cpan.org/modules","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86287.json","tags":["advisory"]},{"url":"https://github.com/robrwo/perl-Net-IP-LPM","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-86287","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.","status":"published","published":"2026-09-07T18:25:37.14Z","modified":"2026-09-08T18:40:45.091Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T13:49:42.666099Z"}],"euvd":[{"id":"EUVD-2026-72526","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.","status":"published","published":"2026-09-07T18:25:37Z","modified":"2026-09-08T18:40:45Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:28.557436Z"}],"ghsa":[{"id":"GHSA-456r-qjr2-xph9","title":"Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths.\n\nNon-numeric and non...","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.","status":"published","published":"2026-09-07T21:30:22Z","modified":"2026-09-08T21:34:12Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T15:11:35.275364Z"}],"nvd":[{"id":"CVE-2026-86287","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.","status":"published","published":"2026-09-07T19:17:28.37Z","modified":"2026-09-08T19:20:13.267Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T14:12:44.436435Z"}],"osv":[{"id":"CVE-2026-86287","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.","status":"published","published":"2026-09-07T18:25:37.14Z","modified":"2026-10-28T11:19:05.027080244Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T15:45:18.825071Z"}]}}