{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-56015",
        "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "state": "PUBLISHED",
        "assignerShortName": "CPANSec",
        "dateReserved": "2026-06-18T11:27:09.117Z",
        "datePublished": "2026-07-03T12:56:04.288Z",
        "dateUpdated": "2026-09-07T18:26:59.147Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://cpan.org/modules",
                    "defaultStatus": "unaffected",
                    "modules": [
                        "Net::IP::LPM"
                    ],
                    "packageName": "Net-IP-LPM",
                    "packageURL": "pkg:cpan/Net-IP-LPM",
                    "programFiles": [
                        "lib/Net/IP/LPM.pm",
                        "lpm_lib.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "Net::IP::LPM::add"
                        },
                        {
                            "name": "addPrefixToTrie"
                        },
                        {
                            "name": "lpm_add_raw"
                        }
                    ],
                    "versions": [
                        {
                            "lessThan": "1.11",
                            "status": "affected",
                            "version": "0",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Net::IP::LPM versions before 1.11 for Perl allow a heap out-of-bounds read via an unbounded prefix length.\n\nadd() passes the prefix string to the trie builder addPrefixToTrie() without checking it against the address width.\n\naddPrefixToTrie() then walks the prefix buffer by prefix_length bits, reading prefix[byte] for byte up to prefix_len/8, where prefix is the 4-byte (IPv4) or 16-byte (IPv6) packed address. A prefix length greater than 32 for IPv4 or 128 for IPv6, for example add(\"1.2.3.4/255\", $v) or add(\"2001:db8::/255\", $v), reads past the end of the packed address.\n\nThe out-of-bounds read happens during trie construction and is bounded: the prefix length is stored as an unsigned char, so the bit walk reads at most 32 bytes from the start of the packed address, a short distance past the end of the 4-byte or 16-byte buffer. It is detectable under AddressSanitizer, valgrind, or a hardened allocator, where it can abort the process. Lookups and dump() format only the valid address width, so the out-of-bounds bytes are not exposed through the module's API."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "description": "CWE-125 Out-of-bounds Read",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
                "shortName": "CPANSec",
                "dateUpdated": "2026-09-07T18:26:59.147Z"
            },
            "references": [
                {
                    "tags": [
                        "issue-tracking",
                        "vendor-advisory"
                    ],
                    "url": "https://rt.cpan.org/Ticket/Display.html?id=179856"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://security.metacpan.org/patches/N/Net-IP-LPM/1.10/CVE-2026-56015-r2.patch"
                },
                {
                    "tags": [
                        "release-notes"
                    ],
                    "url": "https://metacpan.org/release/RRWO/Net-IP-LPM-1.11/changes"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "Net::IP::LPM versions before 1.11 for Perl allow a heap out-of-bounds read via an unbounded prefix length",
            "workarounds": [
                {
                    "lang": "en",
                    "value": "Apply the patch.\n\nOtherwise, reject prefix lengths greater than 32 (IPv4) or 128 (IPv6) before passing them to add()."
                }
            ],
            "x_generator": {
                "engine": "cpansec-cna-tool 0.1"
            }
        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/07/03/4"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2026-07-03T16:31:29.386Z"
                }
            },
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 9.1,
                            "attackVector": "NETWORK",
                            "baseSeverity": "CRITICAL",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-06T18:35:54.436194Z",
                                "id": "CVE-2026-56015",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-06T18:36:22.103Z"
                }
            }
        ]
    }
}