CVE-2026-101280

A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. 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-2026-101280
https://vuldb.com/submit/918282
https://vuldb.com/vuln/411037
https://vuldb.com/vuln/411037/cti
https://xuyongzhe-vt.github.io/share/opendmarc-multi-record-downgrade.html

Configurations

No configuration.

History

29 Sep 2026, 01:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 01:16

Updated : 2026-09-29 18:57

NVD link : CVE-2026-101280

Mitre link : CVE-2026-101280

CVE.ORG link : CVE-2026-101280

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

CWE-290

Authentication Bypass by Spoofing

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