CVE-2026-101278
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductTrusted Domain Project Opendmarc
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-346CWE-346CWE-345CWE-345
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| trusted_domain_project opendmarc | 1.4.0, 1.4.1, 1.4.2 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.