CVE-2026-101280

A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Score

CVSS 3.1 7.3 High

Status

Deferred - cna@vuldb.com

Published

2026-09-29

Last modified

2026-09-29

Weaknesses

CWE-287, CWE-290

Affected products

• Opendmarc (Trusted Domain Project)

References

• https://vuldb.com/cve/CVE-2026-101280
• https://vuldb.com/submit/918282
• https://vuldb.com/vuln/411037
• https://vuldb.com/vuln/411037/cti
• https://xuyongzhe-vt.github.io/share/opendmarc-multi-record-downgrade.html