{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-49940",
        "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "state": "PUBLISHED",
        "assignerShortName": "CPANSec",
        "dateReserved": "2026-06-02T16:06:23.068Z",
        "datePublished": "2026-06-04T16:07:01.276Z",
        "dateUpdated": "2026-06-04T17:36:19.084Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://cpan.org/modules",
                    "defaultStatus": "unaffected",
                    "packageName": "Net-CIDR-Set",
                    "product": "Net::CIDR::Set",
                    "programRoutines": [
                        {
                            "name": "Net::CIDR::Set::IPv4::_pack"
                        },
                        {
                            "name": "Net::CIDR::Set::IPv4::_encode"
                        },
                        {
                            "name": "Net::CIDR::Set::IPv6::_pack"
                        },
                        {
                            "name": "Net::CIDR::Set::IPv6::_pack_ipv4"
                        }
                    ],
                    "repo": "https://github.com/robrwo/perl-Net-CIDR-Set",
                    "vendor": "RRWO",
                    "versions": [
                        {
                            "lessThanOrEqual": "0.20",
                            "status": "affected",
                            "version": "0",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks.\n\nUnicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers.  This could allow network masks to accept larger networks."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1289",
                            "description": "CWE-1289 Improper Validation of Unsafe Equivalence in Input",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
                "shortName": "CPANSec",
                "dateUpdated": "2026-06-04T16:07:01.276Z"
            },
            "references": [
                {
                    "tags": [
                        "release-notes"
                    ],
                    "url": "https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes"
                },
                {
                    "tags": [
                        "related"
                    ],
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40911"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to version 0.21."
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-05-13T00:00:00.000Z",
                    "value": "Issue reported to CPANSec"
                },
                {
                    "lang": "en",
                    "time": "2026-06-02T00:00:00.000Z",
                    "value": "Net::CIDR::Set version 0.21 released with fix"
                }
            ],
            "title": "Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks",
            "x_generator": {
                "engine": "cpansec-cna-tool 0.1"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 6.5,
                            "attackVector": "NETWORK",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                            "integrityImpact": "LOW",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "LOW"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-04T17:33:44.242109Z",
                                "id": "CVE-2026-49940",
                                "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": "2026-06-04T17:36:19.084Z"
                }
            }
        ]
    }
}