CVE-2026-82662

Published: Aug 31, 2026Modified: Sep 1, 2026

8.3

Vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-295

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

References (3)

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/nodemailer-before-8.0.8-tls-certificate-validation-bypass

Source: disclosure@vulncheck.com

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.