Encoding Error Affecting opendmarc package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.29% (22nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-OPENDMARC-20197842
  • published29 Sept 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

CVE-2026-100891  (opens in a new tab)
CWE-172  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable opendmarc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream opendmarc package and not the opendmarc package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Base Scores

version 3.1