CVE-2026-82662

Description

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 Vector

References

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2
• https://www.vulncheck.com/advisories/nodemailer-before-8.0.8-tls-certificate-validation-bypass