---
cve: "CVE-2026-82662"
severity: "HIGH"
cvss: 8.3
epss: "12%"
vendor: "nodemailer"
kev: false
exploited: false
published: "2026-08-31 09:17:04"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T00:35:11+02:00"
---

# CVE-2026-82662

> 8.3 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 15138a84c543c20aa399218534cdbbfa2ea1ce55 (Commit)

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-82662) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_