SB2026040861 - Improper input validation in nodemailer

Description

This security bulletin contains information about 1 vulnerability.

1) Improper input validation (CVE-ID: CVE-2025-13033)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause email misdelivery and disclose sensitive information.

The vulnerability exists due to improper input validation in the email address parser when processing quoted local-parts containing @ characters. A remote attacker can supply a specially crafted recipient address to cause email misdelivery and disclose sensitive information.

Downstream applications that rely on domain-based recipient validation or logging may be affected.

Remediation

Install update from vendor's website.

References

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-mm7p-fcc7-pg87
• https://github.com/advisories/GHSA-mm7p-fcc7-pg87