PT-2026-102417 · Opendmarc · Opendmarc

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CVE-2026-101280

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Published

2026-09-29

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Updated

2026-09-29

CVSS v2.0

7.5

High

VectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Name of the Vulnerable Software and Affected Versions OpenDMARC versions prior to 1.4.3
Description A remote authentication bypass via spoofing is possible in the Multi-Record Set Handler component. The issue resides in the opendmarc policy query dmarc() function.
Recommendations Update to a version newer than 1.4.2. As a temporary workaround, restrict the use of the opendmarc policy query dmarc() function.

Exploit

Fix

Improper Authentication

Authentication Bypass by Spoofing

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Weakness Enumeration

Related Identifiers

CVE-2026-101280

Affected Products

Opendmarc