CVE-2026-82662CWE-295

CVE-2026-82662

Medium · published August 31, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
8.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
8.3 · 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
EPSS
0.00192 · 8.4th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-08-31T13:17Z
References (3)
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]https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 01 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 31 AUG 08:46Z
    Nodemailer before 8.0.8 TLS Certificate Validation Bypass
    cvelistv5