---
cve: "CVE-2026-92596"
severity: "HIGH"
cvss: 8.7
epss: "0.5%"
vendor: "nodemailer"
kev: false
exploited: false
published: "2026-09-16 22:18:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:06:07+02:00"
---

# CVE-2026-92596

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the Node.js event loop for extended periods, consuming 100% CPU and freezing the process.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- efd6e29c10c6e0c25c57bd2f2a71302838235a4f (Commit)
- 34da642 (Commit)

## Referenzen

- <https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2>
- <https://github.com/nodemailer/nodemailer/commit/9116da9>
- <https://github.com/nodemailer/nodemailer/commit/7cc38af>
- <https://github.com/nodemailer/nodemailer/commit/34da642>
- <https://github.com/nodemailer/nodemailer/commit/83b8c48>
- <https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparser>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-92596) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_