CVE-2021-23400

HIGH
Published Jun 29, 20215y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Jun 29, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-74

Affected Products 1

VendorProductVersionRange
nodemailernodemailer* <6.6.1

References 4

  • github.com https://github.com/nodemailer/nodemailer/commit/7e02648cc8cd863f5085bad3cd09087bccf84b9f
    PatchThird Party Advisory
  • github.com https://github.com/nodemailer/nodemailer/issues/1289
    Third Party Advisory
  • snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1314737
    ExploitPatchThird Party Advisory
  • snyk.io https://snyk.io/vuln/SNYK-JS-NODEMAILER-1296415
    ExploitPatchThird Party Advisory

Remediation

  • github.com https://github.com/nodemailer/nodemailer/commit/7e02648cc8cd863f5085bad3cd09087bccf84b9f
    PatchThird Party Advisory
  • snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1314737
    ExploitPatchThird Party Advisory
  • snyk.io https://snyk.io/vuln/SNYK-JS-NODEMAILER-1296415
    ExploitPatchThird Party Advisory