{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101280", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-09-28T11:52:48.230Z", "datePublished": "2026-09-29T00:30:15.504Z", "dateUpdated": "2026-09-29T00:30:15.504Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-29T00:30:15.504Z"}, "title": "Trusted Domain Project OpenDMARC Multi-Record Set opendmarc_policy_query_dmarc authentication spoofing", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-290", "lang": "en", "description": "Authentication Bypass by Spoofing"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-287", "lang": "en", "description": "Improper Authentication"}]}], "affected": [{"vendor": "Trusted Domain Project", "product": "OpenDMARC", "versions": [{"version": "1.4.0", "status": "affected"}, {"version": "1.4.1", "status": "affected"}, {"version": "1.4.2", "status": "affected"}], "cpes": ["cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"], "modules": ["Multi-Record Set Handler"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 7.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-09-28T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-09-28T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-09-28T13:58:09.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "yongzhe_xu (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/411037", "name": "VDB-411037 | Trusted Domain Project OpenDMARC Multi-Record Set opendmarc_policy_query_dmarc authentication spoofing", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/411037/cti", "name": "VDB-411037 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-101280", "name": "CVE-2026-101280 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/918282", "name": "Submit #918282 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authentication", "tags": ["third-party-advisory"]}, {"url": "https://xuyongzhe-vt.github.io/share/opendmarc-multi-record-downgrade.html", "tags": ["exploit"]}], "x_generator": ["VulDB PVTS v202609"]}}}

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"], "modules": ["Multi-Record Set Handler"], "product": "OpenDMARC", "vendor": "Trusted Domain Project", "versions": [{"status": "affected", "version": "1.4.0"}, {"status": "affected", "version": "1.4.1"}, {"status": "affected", "version": "1.4.2"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}], "id": "CVE-2026-101280", "lastModified": "2026-09-29T01:16:44.193", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-09-29T01:16:44.193", "references": [{"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-101280"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/918282"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/411037"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/411037/cti"}, {"source": "cna@vuldb.com", "url": "https://xuyongzhe-vt.github.io/share/opendmarc-multi-record-downgrade.html"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-290"}], "source": "cna@vuldb.com", "type": "Primary"}]}

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