CVE-2026-100889

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.

CVSS v3 7.3 HIGH
CVSS v2.0 7.5 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

No configuration.

History

28 Sep 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-28 00:16

Updated : 2026-09-28 15:16

NVD link : CVE-2026-100889

Mitre link : CVE-2026-100889

CVE.ORG link : CVE-2026-100889

JSON object : View

Products Affected

No product.

CWE

CWE-189

Numeric Errors

CWE-193

Off-by-one Error

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