Remote command injection when using sendmail email transport
Impact
Sites using the sendmail transport as part of their mail config are vulnerable to remote command injection due to a vulnerability in the nodemailer dependency.
Ghost defaults to the direct transport so this is only exploitable if the sendmail transport is explicitly used.
Patches
Fixed in 4.15.0, all sites should upgrade as soon as possible.
Workarounds
- Use an alternative email transport as described in the docs.
For more information
If you have any questions or comments about this advisory:
- email us at security@ghost.org
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | ghost | < 4.15.0 | 4.15.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N- Weakness (CWE)
CWE-88- Platform
- npm
- Package
ghost- Disclosed
- 20.09.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-wfrj-qqc2-83cm - CC BY 4.0
Vulnerability history: ghost
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 61
- First → latest
- 04.2021 10.2026
- Without a fix
- 3
- Exploited in attacks
- 0
Severity breakdown
- Critical 4
- High 16
- Medium 38
- Low 3
Disclosures per year
- 2021: 5
- 2022: 4
- 2023: 3
- 2024: 3
- 2025: 1
- 2026: 45
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