CVE WatchSep 28, 2026

CVE-2026-100888

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

CVSS

7.3

High

EPSS

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KEV

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Exploit Today

0-100

Published: Sep 28, 2026 · Last modified: Sep 28, 2026 · CWE-119 · CWE-787

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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