{"id":"CVE-2026-86287","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-86287","summary":"Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths","details":"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.","published":"2026-09-07T18:25:37.140Z","modified":"2026-09-09T08:24:24.622600Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch","label":"robrwo/perl-Net-IP-LPM@814f8ba"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/09/07/1"},{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86287.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/RRWO/Net-IP-LPM-1.12/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86287"},{"type":"FIX","url":"https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch"},{"type":"PACKAGE","url":"https://github.com/robrwo/perl-Net-IP-LPM"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-09T08:24:24.622600Z"}}