{"id":"CVE-2026-101281","summary":"Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication","details":"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.","modified":"2026-09-30T03:46:49.638521171Z","published":"2026-09-29T00:45:11.946Z","database_specific":{"cwe_ids":["CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101281.json","cna_assigner":"VulDB"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101281.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101281"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-101281"},{"type":"ADVISORY","url":"https://vuldb.com/submit/918284"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/411038"},{"type":"REPORT","url":"https://github.com/trusteddomainproject/OpenDMARC/issues/262"},{"type":"REPORT","url":"https://vuldb.com/vuln/411038/cti"},{"type":"FIX","url":"https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6"},{"type":"FIX","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/328"},{"type":"EVIDENCE","url":"https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/trusteddomainproject/opendmarc","events":[{"introduced":"a29adab78ea9b6625066fdc482eae0ec6aa19ca6"},{"fixed":"c48a74c758677fc5272a73eff15ffdbf8afda1a6"}],"database_specific":{"extracted_events":[{"introduced":"1.4.0"},{"last_affected":"1.4.0"},{"introduced":"1.4.1"},{"last_affected":"1.4.1"},{"introduced":"1.4.2"},{"last_affected":"1.4.2"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["1.4.0","1.4.1","1.4.2","rel-opendmarc-1-4-0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101281.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}