{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-32284",
        "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "state": "PUBLISHED",
        "assignerShortName": "Go",
        "dateReserved": "2026-03-11T16:38:46.556Z",
        "datePublished": "2026-03-26T19:40:51.686Z",
        "dateUpdated": "2026-10-07T17:46:21.910Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
                "shortName": "Go",
                "dateUpdated": "2026-10-07T17:46:21.910Z"
            },
            "title": "Denial of service in github.com/shamaton/msgpack",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack."
                }
            ],
            "affected": [
                {
                    "vendor": "github.com/shamaton/msgpack",
                    "product": "github.com/shamaton/msgpack",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "github.com/shamaton/msgpack",
                    "programRoutines": [
                        {
                            "name": "Unmarshal"
                        },
                        {
                            "name": "UnmarshalAsMap"
                        },
                        {
                            "name": "UnmarshalAsArray"
                        },
                        {
                            "name": "DecodeStructAsArray"
                        },
                        {
                            "name": "DecodeStructAsMap"
                        }
                    ],
                    "defaultStatus": "affected"
                },
                {
                    "vendor": "github.com/shamaton/msgpack/v2",
                    "product": "github.com/shamaton/msgpack/v2",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "github.com/shamaton/msgpack/v2",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "2.4.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "Unmarshal"
                        },
                        {
                            "name": "UnmarshalAsMap"
                        },
                        {
                            "name": "UnmarshalAsArray"
                        }
                    ],
                    "defaultStatus": "unaffected"
                },
                {
                    "vendor": "github.com/shamaton/msgpack/v3",
                    "product": "github.com/shamaton/msgpack/v3",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "github.com/shamaton/msgpack/v3",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "3.1.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "Unmarshal"
                        },
                        {
                            "name": "UnmarshalAsMap"
                        },
                        {
                            "name": "UnmarshalAsArray"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "CWE-125: Out-of-bounds Read"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/shamaton/msgpack/issues/59"
                },
                {
                    "url": "https://github.com/golang/vulndb/issues/4513"
                },
                {
                    "url": "https://pkg.go.dev/vuln/GO-2026-4513"
                }
            ]
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "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": "2026-03-30T14:04:12.686407Z",
                                "id": "CVE-2026-32284",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-03-30T14:55:25.762Z"
                }
            }
        ]
    }
}