---
cve: "CVE-2026-71327"
severity: "HIGH"
cvss: 7.6
epss: "36%"
vendor: "traefik"
kev: false
exploited: false
published: "2026-08-06 22:18:29"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T00:40:56+02:00"
---

# CVE-2026-71327

> 7.6 HIGH · 🧪 PoC

## Beschreibung

Traefik is an open source HTTP reverse proxy and load balancer. From 3.0.0 until 3.6.25 and 3.7.10, Traefik's Kubernetes Gateway API provider in pkg/provider/kubernetes/gateway/httproute.go, grpcroute.go, tcproute.go, and tlsroute.go builds HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute router and service identities by hyphen-concatenating namespace, route name, Gateway identity, entry point, and rule index, allowing colliding Routes to overwrite another namespace's backend. This issue is fixed in 3.6.25 and 3.7.10.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 4b18b24b0b002dcc80e0640c6088a87d813de29a (Commit)
- 2a2349356c01b1b1f7ecddb0c17b30c97f5241e7 (Commit)

## Referenzen

- <https://github.com/traefik/traefik/security/advisories/GHSA-fgjj-px3w-67xx>
- <https://github.com/traefik/traefik/pull/13580>
- <https://github.com/traefik/traefik/commit/a764166656f0cd337f917ac76315c381cca844f9>
- <https://github.com/traefik/traefik/releases/tag/v3.6.25>
- <https://github.com/traefik/traefik/releases/tag/v3.7.10>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-71327) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_