An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2.
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
Why it matters now
EPSS 0.00745 55th percentileScored 2026-11-07
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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opendkim:opendkim:*:*:*:*:*:*:*:* | up to 2.10.3 | Vulnerable | Opendkim |
| cpe:2.3:a:opendkim:opendkim:2.11.0:beta0:*:*:*:*:*:* | 2.11.0 beta0 | Vulnerable | Opendkim |
| cpe:2.3:a:opendkim:opendkim:2.11.0:beta1:*:*:*:*:*:* | 2.11.0 beta1 | Vulnerable | Opendkim |
| cpe:2.3:a:opendkim:opendkim:2.11.0:beta2:*:*:*:*:*:* | 2.11.0 beta2 | Vulnerable | Opendkim |
- cpe:2.3:a:opendkim:opendkim:*:*:*:*:*:*:*:* Versions up to 2.10.3 Vulnerable ·Opendkim
- cpe:2.3:a:opendkim:opendkim:2.11.0:beta0:*:*:*:*:*:* Versions 2.11.0 beta0 Vulnerable ·Opendkim
- cpe:2.3:a:opendkim:opendkim:2.11.0:beta1:*:*:*:*:*:* Versions 2.11.0 beta1 Vulnerable ·Opendkim
- cpe:2.3:a:opendkim:opendkim:2.11.0:beta2:*:*:*:*:*:* Versions 2.11.0 beta2 Vulnerable ·Opendkim
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48521
- 2026-10-03 Alias added: GHSA-3q5m-9r3g-pqfj
References
More Opendkim vulnerabilities
- TI-2020-18215 The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain… CVSS 3.1HIGH 7.8
Sources
- CVE-2022-48521 · CVE Program
- CVE-2022-48521 · NVD
- FIRST EPSS
- GHSA-3q5m-9r3g-pqfj · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48521 · Red Hat security data · CC BY 4.0
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