CVE-2026-100888 | Trusted Domain Project OpenDKIM up to 2.11.0 DKIM Signature Header Selection libopendkim/dkim-canon.c dkim_canon_selecthdrs h out-of-bounds write

A vulnerability was found in Trusted Domain Project OpenDKIM up to 2.11.0. It has been declared as critical. 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.

This vulnerability is handled as CVE-2026-100888. The attack can be executed remotely. Additionally, an exploit exists.

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