CVE-2026-101281

HIGH

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.

CVSS v3.1 Score

7.3
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Published: 9/29/2026Modified: 10/1/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-101281 — A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected ...

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: c48a74c75

CVE-2026-101281
NIST NVD

References (8)

https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6https://github.com/trusteddomainproject/OpenDMARC/issues/262https://github.com/trusteddomainproject/OpenDMARC/pull/328https://vuldb.com/cve/CVE-2026-101281https://vuldb.com/submit/918284https://vuldb.com/vuln/411038https://vuldb.com/vuln/411038/ctihttps://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html