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.
Published: 2026-08-31
Score: 8.3 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 31 Aug 2026 09:00:00 +0000

Type Values Removed Values Added
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.
Title Nodemailer before 8.0.8 TLS Certificate Validation Bypass
First Time appeared Nodemailer
Nodemailer nodemailer
Weaknesses CWE-295
CPEs cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:*:*:*
Vendors & Products Nodemailer
Nodemailer nodemailer
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 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'}

Subscriptions

Nodemailer Nodemailer
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-31T08:46:26.978Z

Reserved: 2026-08-30T13:38:29.952Z

Link: CVE-2026-82662

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-31T09:17:04.093

Modified: 2026-08-31T09:17:04.093

Link: CVE-2026-82662

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T10:30:17Z

Weaknesses