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TI-2021-06093 Aliases CVE-2021-23400GHSA-hwqf-gcqm-7353

HTTP Header Injection

Priority MEDIUM 41CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

The package nodemailer before 6.6.1 are vulnerable to HTTP Header Injection if unsanitized user input that may contain newlines and carriage returns is passed into an address object.

Why it matters now

EPSS 0.01392 72nd percentileScored 2026-11-07
Fix Fixed nodemailer: 6.6.1nodemailer (npm): 6.6.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—nodemailerbefore 6.6.16.6.1Patch availableCNA
—nodemailer (npm)before 6.6.16.6.1Patch availableGHSA-hwqf-gcqm-7353
  • nodemailer Vendor— Affected before 6.6.1 Fixed in 6.6.1 Patch available CNA
  • nodemailer (npm) Vendor— Affected before 6.6.1 Fixed in 6.6.1 Patch available GHSA-hwqf-gcqm-7353

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:node.js:*:*before 6.6.1Vulnerablenodemailer
  • cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:node.js:*:* Versions before 6.6.1 Vulnerable ·nodemailer

Remediation

  • Fix · CNA nodemailer Fixed in 6.6.1
  • Fix · GHSA-hwqf-gcqm-7353 nodemailer (npm) Fixed in 6.6.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-23400
  2. 2026-10-03 Alias added: GHSA-hwqf-gcqm-7353

References

Patch 1

Advisory 2

  • TI-2025-13566 Nodemailer: nodemailer: denial of service via crafted email address header CVSS 3.1HIGH 7.5
  • TI-2020-06286 Command injection in nodemailer CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences