What’s Vulnerable › Vulnerabilities

CVE-2020-7769: Command Injection

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-11-12 · updated 2026-06-17
• Weakness: CWE-88

Description

This affects the package nodemailer before 6.4.16. Use of crafted recipient email addresses may result in arbitrary command flag injection in sendmail transport for sending mails.

Affected products

• nodemailer: before 6.4.16 — fixed in 6.4.16

How to fix

Upgrade to a fixed version: nodemailer 6.4.16. Check the vendor advisory for mitigations.

References

• https://github.com/nodemailer/nodemailer/blob/33b62e2ea6bc9215c99a9bb4bfba94e2fb27ebd0/lib/sendmail-transport/index.js%23L75
• https://github.com/nodemailer/nodemailer/commit/ba31c64c910d884579875c52d57ac45acc47aa54
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1039742
• https://snyk.io/vuln/SNYK-JS-NODEMAILER-1038834
• https://github.com/nodemailer/nodemailer/blob/33b62e2ea6bc9215c99a9bb4bfba94e2fb27ebd0/lib/sendmail-transport/index.js%23L75
• https://github.com/nodemailer/nodemailer/commit/ba31c64c910d884579875c52d57ac45acc47aa54
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1039742
• https://snyk.io/vuln/SNYK-JS-NODEMAILER-1038834

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