PT-2026-83727
CVE-2026-82662
·
Published
2026-06-15
·
Updated
2026-10-19
Description by
CVSS 4.0
8.3
HighMetricsAV: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
Name of the Vulnerable Software and Affected Versions
Nodemailer versions prior to 8.0.8
Description
Nodemailer disables TLS certificate verification in its internal HTTPS fetch client located in
lib/fetch/index.js by setting rejectUnauthorized: false. This configuration causes OAuth2 token requests to trust invalid or self-signed HTTPS certificates, bypassing hostname validation and CA chain verification. Consequently, an attacker in a machine-in-the-middle position can intercept sensitive OAuth credentials transmitted over compromised HTTPS connections, including the client secret, refresh token, and access tokens.Recommendations
Update Nodemailer to version 8.0.8 or later.
Exploitability
Exploit
Fix
Impacts
Researchers
Vendors
Affected products
Found an issue in the description? Have something to add? Feel free to write us 👾