CVE-2019-16378: Critical severity Trusteddomain Opendmarc vulnerability
Last updated 25 August 2025
Other sources
OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.
— MITRE
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability ID of this OpenDMARC vulnerability?
The vulnerability ID of this OpenDMARC vulnerability is CVE-2019-16378.
What is the severity level of CVE-2019-16378?
The severity level of CVE-2019-16378 is critical with a score of 9.8 out of 10.
Which versions of OpenDMARC are affected by CVE-2019-16378?
OpenDMARC versions 1.3.2 through 1.3.2-3ubuntu0.1, 1.3.2-7, 1.3.2-3ubuntu0.1, 1.3.2-6+deb10u2, 1.3.2-6+deb10u4, 1.4.0~beta1+dfsg-6+deb11u1, 1.4.2-2, and 1.4.2-3 are affected by CVE-2019-16378.
What is the impact of CVE-2019-16378?
CVE-2019-16378 allows for a signature-bypass vulnerability with multiple From: addresses, which can affect applications that consider a domain name to be relevant to the origin of an email message.
Are there any known remedies for CVE-2019-16378?
Yes, there are known remedies for CVE-2019-16378. For the Ubuntu distribution, versions 1.3.2-3ubuntu0.1 and 1.3.2-7 are recommended. For the Debian distribution, versions 1.3.2-6+deb10u2, 1.3.2-6+deb10u4, 1.4.0~beta1+dfsg-6+deb11u1, 1.4.2-2, and 1.4.2-3 are recommended.