Critical severity9.8NVD Advisory· Published Apr 27, 2020· Updated Jun 17, 2026
CVE-2019-20790
CVE-2019-20790
Description
OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO field is inconsistent with the MAIL FROM field.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8- cpe:2.3:a:pypolicyd-spf_project:pypolicyd-spf:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:*range: >=1.3.0,<=1.3.2
- cpe:2.3:a:trusteddomain:opendmarc:1.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- OpenDMARC/OpenDMARCdescription
- Range: =2.0.2
Patches
Vulnerability mechanics
References
5- bugs.launchpad.net/pypolicyd-spf/+bug/1838816nvdExploitThird Party Advisory
- sourceforge.net/p/opendmarc/tickets/235/nvdExploitThird Party Advisory
- www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdfnvdTechnical DescriptionThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/nvd
News mentions
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