How severe is CVE-2020-7769?

CVE-2020-7769 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2020-7769 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7769?

CVE-2020-7769 affects Nodemailer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7769?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-7769 published?

CVE-2020-7769 was published on 2020-11-12 and last updated on 2026-06-17.

CVE-2020-7769

CVE-2020-7769 is a high-severity vulnerability in Nodemailer with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-88.

Key facts

Severity: High (CVSS 3.x base score 8.6)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-88
Affected product: Nodemailer
Published: 2020-11-12
Last modified: 2026-06-17

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.

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 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2020-7769 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7769?: CVE-2020-7769 affects Nodemailer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7769?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-7769 published?: CVE-2020-7769 was published on 2020-11-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:node.js:*:*

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