CVE-2026-82662: high-severity vulnerability in nodemailer
Nodemailer before 8.0.8 TLS Certificate Validation Bypass
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.3epss 0.2%
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.
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
Affected products
nodemailer · nodemailerRelated CVEs — nodemailer
In the same product, most dangerous first.
CVE-2026-82854CRITICALNodemailer before 8.0.4 SMTP Command Injection via envelope.sizeEPSS 2.0%CVE-2026-82853MEDIUMNodemailer before 8.0.5 SMTP Command Injection via CRLFEPSS 1.0%CVE-2026-92596HIGHNodemailer before 9.1.0 Denial of Service via addressparserEPSS 0.8%CVE-2026-90776HIGHNodemailer 9.1.0 through 10.0.4 Denial of Service via Quadratic Address ParsingEPSS 0.7%CVE-2025-14874HIGHNodemailer: nodemailer: denial of service via crafted email address headerEPSS 0.6%CVE-2025-13033HIGHNodemailer: nodemailer: email to an unintended domain can occur due to interpretation conflictEPSS 0.6%