CVE-2026-100889

HIGH 7.3

Trusted Domain Project OpenDKIM Decoder util.c dkim_qp_decode off-by-one

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0. Affected is the function dkim_qp_decode of the file util.c of the component Decoder. The manipulation results in off-by-one. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CWE	CWE-193 CWE-189
Vendor	trusted domain project
Product	opendkim
Published	Sep 27, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Trusted Domain Project / OpenDKIM

2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/410839 vuldb.com: https://vuldb.com/vuln/410839/cti vuldb.com: https://vuldb.com/cve/CVE-2026-100889 vuldb.com: https://vuldb.com/submit/917063 weitongli.com: https://weitongli.com/share/opendkim-qp-off-by-one.html

Credits

🔍 WeitongLi (VulDB User) VulDB CNA Team