CVE-2026-82662

EUVD-2026-68440
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
6.5 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 8.28%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
nodemailernodemailer
𝑥
< 8.0.8
CNA
Debian logo
Debian Releases
Debian Product
Codename
node-nodemailer
bookworm
postponed
forky
10.0.13+~8.0.2-1
fixed
sid
10.0.14+~8.0.2-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
node-nodemailer
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
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
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2