{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-27831",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-02-24T02:32:39.800Z",
        "datePublished": "2026-02-26T00:11:45.608Z",
        "dateUpdated": "2026-02-27T15:24:12.727Z"
    },
    "containers": {
        "cna": {
            "title": "rldns Vulnerable to Heap-based Out-of-Bounds Read",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "lang": "en",
                            "description": "CWE-125: Out-of-bounds Read",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4"
                },
                {
                    "name": "https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4"
                },
                {
                    "name": "https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff"
                },
                {
                    "name": "https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031"
                }
            ],
            "affected": [
                {
                    "vendor": "bluedragonsecurity",
                    "product": "rldns",
                    "versions": [
                        {
                            "version": "= 1.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-02-27T15:24:12.727Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue."
                }
            ],
            "source": {
                "advisory": "GHSA-fv38-45j4-g9x4",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-02-26T15:14:43.983653Z",
                                "id": "CVE-2026-27831",
                                "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": "2026-02-26T15:14:48.813Z"
                }
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        ]
    }
}