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.

References

https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html

https://vuldb.com/vuln/411038/cti

https://vuldb.com/vuln/411038

https://vuldb.com/submit/918284

https://vuldb.com/cve/CVE-2026-101281

https://github.com/trusteddomainproject/OpenDMARC/pull/328

https://github.com/trusteddomainproject/OpenDMARC/issues/262

https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS