CVE-2026-110870

Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95
https://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95

Configurations

No configuration.

History

26 Oct 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95 -~~	() https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95 -

14 Oct 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 23:17

Updated : 2026-10-26 16:17

NVD link : CVE-2026-110870

Mitre link : CVE-2026-110870

CVE.ORG link : CVE-2026-110870

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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