{"id":"CVE-2026-101281","title":"A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2","summary":"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 ma…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-287"],"vendor":"Trusted Domain Project","product":"OpenDMARC","affected":["OpenDMARC 1.4.0","OpenDMARC 1.4.1","OpenDMARC 1.4.2"],"published":"2026-09-29","updated":"2026-10-01","sourceUpdated":"2026-10-01T16:17:32.293","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101281","references":[{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6","label":"cna@vuldb.com"},{"url":"https://github.com/trusteddomainproject/OpenDMARC/issues/262","label":"cna@vuldb.com"},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/328","label":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-101281","label":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/918284","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/411038","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/411038/cti","label":"cna@vuldb.com"},{"url":"https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html","label":"cna@vuldb.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101281.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-101281"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-101281"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-01T15:27:09.242643Z"},"epss":0.00411,"epssPercentile":0.35126,"ingestedAt":"2026-09-29T01:24:51.144Z","slug":"CVE-2026-101281","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-29 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101281.json)","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":214371,"id":"CVE-2026-101281","ts":1790869805512,"field":"exploit_available","old":"false","new":"true"}]}