SB2026040861 - Improper input validation in nodemailer
Published: April 8, 2026
Security Bulletin ID
SB2026040861
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper input validation (CVE-ID: CVE-2025-13033)
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.