{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101281", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-09-28T11:52:51.804Z", "datePublished": "2026-09-29T00:45:11.946Z", "dateUpdated": "2026-09-29T00:45:11.946Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-29T00:45:11.946Z"}, "title": "Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication", "problemTypes": [{"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": ["SPF Macro Handler"]}], "descriptions": [{"lang": "en", "value": "A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_sp2_find_mailfrom_domain of the file libopendmarc/opendmarc_spf.c of the component SPF Macro Handler. This manipulation causes improper authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c48a74c758677fc5272a73eff15ffdbf8afda1a6. Applying a patch is the recommended action to fix this issue."}], "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:O/RC:C", "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:O/RC:C", "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:OF/RC:C"}}], "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": "2026-09-28T13:58:13.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "yongzhe_xu (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/411038", "name": "VDB-411038 | Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/411038/cti", "name": "VDB-411038 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-101281", "name": "CVE-2026-101281 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/918284", "name": "Submit #918284 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authentication", "tags": ["third-party-advisory"]}, {"url": "https://github.com/trusteddomainproject/OpenDMARC/issues/262", "tags": ["issue-tracking"]}, {"url": "https://github.com/trusteddomainproject/OpenDMARC/pull/328", "tags": ["issue-tracking", "patch"]}, {"url": "https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html", "tags": ["exploit"]}, {"url": "https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6", "tags": ["patch"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202609"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"], "modules": ["SPF Macro 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 flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_sp2_find_mailfrom_domain of the file libopendmarc/opendmarc_spf.c of the component SPF Macro Handler. This manipulation causes improper authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c48a74c758677fc5272a73eff15ffdbf8afda1a6. Applying a patch is the recommended action to fix this issue."}], "id": "CVE-2026-101281", "lastModified": "2026-09-29T01:16:44.367", "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": "2026-09-29T01:16:44.367", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6"}, {"source": "cna@vuldb.com", "url": "https://github.com/trusteddomainproject/OpenDMARC/issues/262"}, {"source": "cna@vuldb.com", "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/328"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-101281"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/918284"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/411038"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/411038/cti"}, {"source": "cna@vuldb.com", "url": "https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.4.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.4.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.4.2"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "OpenDMARC", "source": "cna", "vendor": "Trusted Domain Project"}, "product": "opendmarc", "vendor": "trusted_domain_project"}], "created": "2026-09-29T02:30:10.267471+00:00", "updated": "2026-09-29T03:15:04.449869+00:00", "vendors": ["trusted_domain_project", "trusted_domain_project$PRODUCT$opendmarc"]}