NVD HIGH: CVE-2026-100891 — A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. ...

Monday, September 28, 2026 at 01:16 AM UTC·Source: NIST NVD

Updated: Wednesday, September 30, 2026 at 06:00 PM UTC

Executive Summary

A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used

Analysis

Indicators of Compromise (1)

CVE (1)

CVE-2026-100891

NVD MITRE CVE

Source Attribution

Originally published by NIST NVD on Sep 28, 2026. Verified by: NIST.

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