{"id":"CVE-2026-101281","published":"2026-09-29T01:16:44.367","lastModified":"2026-09-29T18:57:24.350","description":"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.","cvssScore":7.3,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cwes":["CWE-287"],"vendors":[],"products":[],"references":[{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/issues/262","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/328","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-101281","tags":[]},{"url":"https://vuldb.com/submit/918284","tags":[]},{"url":"https://vuldb.com/vuln/411038","tags":[]},{"url":"https://vuldb.com/vuln/411038/cti","tags":[]},{"url":"https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html","tags":[]}],"exploitRefs":[{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/issues/262","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/328","tags":[]}],"hasPoc":true,"ai":null}