OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to…
Priority LOW 28CWE-290Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-290.
Summary
OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.
Why it matters now
EPSS 0.02121 81st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:* | 1.0.0 – 1.3.2 | Vulnerable | Trusteddomain |
| cpe:2.3:a:trusteddomain:opendmarc:1.4.0:-:*:*:*:*:*:* | 1.4.0 | Vulnerable | Trusteddomain |
| cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta0:*:*:*:*:*:* | 1.4.0 beta0 | Vulnerable | Trusteddomain |
| cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta1:*:*:*:*:*:* | 1.4.0 beta1 | Vulnerable | Trusteddomain |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
- cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:* Versions 1.0.0 – 1.3.2 Vulnerable ·Trusteddomain
- cpe:2.3:a:trusteddomain:opendmarc:1.4.0:-:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·Trusteddomain
- cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta0:*:*:*:*:*:* Versions 1.4.0 beta0 Vulnerable ·Trusteddomain
- cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta1:*:*:*:*:*:* Versions 1.4.0 beta1 Vulnerable ·Trusteddomain
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-12272
- 2026-10-03 Alias added: GHSA-m64q-99pc-qh99
References
Sources
- CVE-2020-12272 · CVE Program
- CVE-2020-12272 · NVD
- FIRST EPSS
- GHSA-m64q-99pc-qh99 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-12272 · Red Hat security data · CC BY 4.0
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