CVE-2026-101278

What it is

A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. Limited direct impact.

Exploit odds

0.1% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-09-29 01:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-01 16:17 UTC Last updatedMost recent change to the record

Details

Published

2026-09-29 01:16 UTC

Last modified

2026-10-01 16:17 UTC

Exploit probability

0.1% · EPSS, next 30 days

Weakness

CWE-345

Record status

Deferred

Attack profile CVSS 4.0 · 2.1

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

Low

User interaction

None

Confidentiality

None

Integrity

Low

Availability

None