Improper Certificate Validation Affecting node-nodemailer package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.19% (8th percentile)

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  • Snyk IDSNYK-DEBIAN12-NODENODEMAILER-19438189
  • published1 Sept 2026
  • disclosed31 Aug 2026

Introduced: 31 Aug 2026

CVE-2026-82662  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 node-nodemailer.

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 Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Nodemailer before 8.0.8 disables TLS certificate verification in lib/fetch/index.js through rejectUnauthorized: false, allowing attackers to intercept OAuth2 token requests. Attackers in a machine-in-the-middle position can capture OAuth client secrets, refresh tokens, and access tokens transmitted over compromised HTTPS connections.

CVSS Base Scores

version 3.1