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CVE-2026-82662 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2	CISA-ADP
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2	[email protected]
https://www.vulncheck.com/advisories/nodemailer-before-8.0.8-tls-certificate-validation-bypass	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-295	Improper Certificate Validation	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 1, 2026	CVE Modified	CISA-ADP
Aug 31, 2026	New CVE Received	[email protected]