PT-2026-102415 · Opendmarc · Opendmarc

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CVE-2026-101278

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Published

2026-09-29

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Updated

2026-09-29

CVSS v3.1

4.3

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Name of the Vulnerable Software and Affected Versions OpenDMARC versions prior to 1.4.3
Description A weakness exists in the PSL Wildcard Handler component within the opendmarc get tld() function of the libopendmarc/opendmarc tld.c file. A remote attacker can perform a manipulation that leads to an origin validation error.
Recommendations Update to a version newer than 1.4.2. As a temporary mitigation, restrict the use of the opendmarc get tld() function.

Exploit

Fix

Origin Validation Error

Insufficient Verification of Data Authenticity

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Weakness Enumeration

Related Identifiers

CVE-2026-101278

Affected Products

Opendmarc