CVE-2026-100888

HighCVSS 7.3/10Last modified Sep 30, 2026

Description

A weakness has been identified in Trusted Domain Project OpenDKIM up to 2.11.0. This affects the function dkim_canon_selecthdrs of the file libopendkim/dkim-canon.c of the component DKIM Signature Header Selection. Executing a manipulation of the argument h can lead to out-of-bounds write. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-119 CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Sep 28, 2026
Last modified: Sep 30, 2026
NVD status: Deferred

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