CVE-2020-7769

Name: CVE-2020-7769
Creator: NVD / NIST
Published: 2020-11-12T09:15:11.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.32%

Last modified Jun 17, 2026

CVE-2020-7769 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.32%

81.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-88

Affected Software

Vendor	Product	Versions
Nodemailer	Nodemailer	< 6.4.16

References

https://github.com/nodemailer/nodemailer/blob/33b62e2ea6bc9215c99a9bb4bfba94e2fb27ebd0/lib/sendmail-transport/index.js%23L75Broken Link, Third Party Advisory
https://github.com/nodemailer/nodemailer/commit/ba31c64c910d884579875c52d57ac45acc47aa54Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1039742Exploit, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-NODEMAILER-1038834Exploit, Patch, Third Party Advisory
https://github.com/nodemailer/nodemailer/blob/33b62e2ea6bc9215c99a9bb4bfba94e2fb27ebd0/lib/sendmail-transport/index.js%23L75Broken Link, Third Party Advisory
https://github.com/nodemailer/nodemailer/commit/ba31c64c910d884579875c52d57ac45acc47aa54Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1039742Exploit, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-NODEMAILER-1038834Exploit, Patch, Third Party Advisory

Timeline

Published: Nov 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7769?

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.

How severe is CVE-2020-7769?

CVE-2020-7769 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.32% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7769?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7769?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST