CVE-2026-101278

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.

  • Published Sep 29, 2026
  • CVSS 2.1 low
  • 0.1% chance of exploitation in the next 30 days (EPSS)
  • No fix is known yet

Affected software

CVE-2026-101278 at the National Vulnerability Database