---
cve: "CVE-2026-82853"
severity: "MEDIUM"
cvss: 6.9
epss: "0.7%"
vendor: "nodemailer"
kev: false
exploited: false
published: "2026-08-31 09:17:05"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T00:28:29+02:00"
---

# CVE-2026-82853

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

Nodemailer versions before 8.0.5 contain an SMTP command injection vulnerability in the transport name option used in EHLO/HELO commands. The name parameter is concatenated directly into SMTP commands without sanitizing carriage return and line feed characters, allowing attackers to inject arbitrary SMTP commands for email spoofing and phishing attacks.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
```

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

## Patch verfügbar (OSV)

- 202cfb3e14010223204e9ba9f7430176be624f0f (Commit)

## Referenzen

- <https://github.com/nodemailer/nodemailer/security/advisories/GHSA-vvjj-xcjg-gr5g>
- <https://www.vulncheck.com/advisories/nodemailer-before-8.0.5-smtp-command-injection-via-crlf>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-82853) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_