High severity7.3NVD Advisory· Published Sep 29, 2026
CVE-2026-101281
CVE-2026-101281
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.
Patches
Vulnerability mechanics
References
8- github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6nvd
- github.com/trusteddomainproject/OpenDMARC/issues/262nvd
- github.com/trusteddomainproject/OpenDMARC/pull/328nvd
- vuldb.com/cve/CVE-2026-101281nvd
- vuldb.com/submit/918284nvd
- vuldb.com/vuln/411038nvd
- vuldb.com/vuln/411038/ctinvd
- xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.htmlnvd
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