Improper input validation in nodemailer - CVE-2025-13033
Published: April 8, 2026
Vulnerability identifier: #VU125298
CSH Severity: Medium
CVSS v4.0: 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
CVE-ID: CVE-2025-13033
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: nodemailer
Affected software:
nodemailer
nodemailer
Detailed vulnerability description
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.
How to mitigate CVE-2025-13033
Install security update from vendor's website.