CVE-2019-20790
CRITICAL
9.8
CVSS Score
Published: April 27, 2020 at 02:00 PM UTC
Updated: June 17, 2026 at 02:31 AM UTC
3 products affected across 3 vendorsFedoraOpenDMARCPypolicyd Spf
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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
1.3.0 ≤ v ≤ 1.3.21.4.0
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://bugs.launchpad.net/pypolicyd-spf/+bug/1838816Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://sourceforge.net/p/opendmarc/tickets/235/x_refsource_MISCTechnical DescriptionThird Party Advisory
Source: [email protected]
https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdfCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-290
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