Improper Validation of Syntactic Correctness of Input Affecting node-nodemailer package, versions <6.10.0+~6.4.17-1+deb13u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.54% (43rd percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODENODEMAILER-19477142
  • published1 Sept 2026
  • disclosed14 Nov 2025

Introduced: 14 Nov 2025

CVE-2025-13033  (opens in a new tab)
CWE-1286  (opens in a new tab)

How to fix?

Upgrade Echo:latest node-nodemailer to version 6.10.0+~6.4.17-1+deb13u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-nodemailer package and not the node-nodemailer package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A vulnerability was identified in the email parsing library due to improper handling of specially formatted recipient email addresses. An attacker can exploit this flaw by crafting a recipient address that embeds an external address within quotes. This causes the application to misdirect the email to the attacker's external address instead of the intended internal recipient. This could lead to a significant data leak of sensitive information and allow an attacker to bypass security filters and access controls.

CVSS Base Scores

version 3.1