---
cve: "CVE-2024-39321"
severity: "HIGH"
cvss: 7.5
epss: "59%"
vendor: "traefik"
kev: false
exploited: false
published: "2024-07-05 17:32:06"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T07:56:27+02:00"
---

# CVE-2024-39321

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Traefik is an HTTP reverse proxy and load balancer. Versions prior to 2.11.6, 3.0.4, and 3.1.0-rc3 have a vulnerability that allows bypassing IP allow-lists via HTTP/3 early data requests in QUIC 0-RTT handshakes sent with spoofed IP addresses. Versions 2.11.6, 3.0.4, and 3.1.0-rc3 contain a patch for this issue. No known workarounds are available.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 927f0bc01a787ecfea254c52e56ea084acc8304a (Commit)
- d42e75bb2eabbe684809929ce96abfe09d4e50fb (Commit)

## Referenzen

- <https://github.com/traefik/traefik/security/advisories/GHSA-gxrv-wf35-62w9>
- <https://github.com/traefik/traefik/releases/tag/v2.11.6>
- <https://github.com/traefik/traefik/releases/tag/v3.0.4>
- <https://github.com/traefik/traefik/releases/tag/v3.1.0-rc3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2024-39321) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_