{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93657",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-09-18T13:30:25.560Z",
        "datePublished": "2026-09-18T14:23:20.181Z",
        "dateUpdated": "2026-09-21T20:51:40.507Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-09-18T14:23:20.181Z"
            },
            "datePublic": "2026-09-03T21:04:44.000Z",
            "title": "hickory-resolver before 0.26.2 DNSSEC Validation Bypass",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Verification of Cryptographic Signature",
                            "cweId": "CWE-347",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "hickory-dns",
                    "product": "hickory-resolver",
                    "defaultStatus": "unaffected",
                    "collectionURL": "https://crates.io",
                    "packageName": "hickory-resolver",
                    "packageURL": "pkg:cargo/hickory-resolver",
                    "repo": "https://github.com/hickory-dns/hickory-dns",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "0.26.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "0.26.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "cvssV4_0": {
                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH"
                    }
                },
                {
                    "format": "CVSS",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-5j98-2g5x-46v6",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-5j98-2g5x-46v6)"
                },
                {
                    "url": "https://github.com/hickory-dns/hickory-dns/commit/30720f4fb22e5556ecbf26d2c8274ea4a9fdd238",
                    "tags": [
                        "patch"
                    ],
                    "name": "Return error from Resolver::lookup() if bogus"
                },
                {
                    "url": "https://github.com/hickory-dns/hickory-dns/pull/3871",
                    "tags": [
                        "patch",
                        "issue-tracking"
                    ],
                    "name": "Pull Request #3871"
                },
                {
                    "url": "https://github.com/hickory-dns/hickory-dns/releases/tag/v0.26.2",
                    "tags": [
                        "release-notes"
                    ],
                    "name": "hickory-resolver v0.26.2 Release Notes"
                },
                {
                    "url": "https://github.com/hickory-dns/hickory-dns",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "name": "VulnCheck Advisory: hickory-resolver before 0.26.2 DNSSEC Validation Bypass",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/hickory-resolver-before-0.26.2-dnssec-validation-bypass"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Ali Firas (thesmartshadow)",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-21T16:28:49.154433Z",
                                "id": "CVE-2026-93657",
                                "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": "2026-09-21T20:51:40.507Z"
                }
            }
        ]
    }
}