---
cve: "CVE-2026-44774"
severity: "MEDIUM"
cvss: 6.4
epss: "47%"
vendor: "traefik"
kev: false
exploited: false
published: "2026-05-15 17:16:48"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T05:10:58+02:00"
---

# CVE-2026-44774

> 6.4 MEDIUM · 🧪 PoC

## Beschreibung

Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.46, 3.6.17, and 3.7.1, Traefik's Kubernetes Gateway API provider allows a tenant with HTTPRoute creation permissions to expose the REST provider handler, bypassing the providers.rest.insecure=false setting. The Gateway provider accepts any TraefikService backend reference whose name ends with @internal, making it possible to route traffic to rest@internal in addition to the intended api@internal. In shared Gateway deployments where the REST provider is enabled, this allows a low-privileged actor to gain live dynamic configuration write access to Traefik, enabling unauthorized reconfiguration of routers and services. This vulnerability is fixed in 2.11.46, 3.6.17, and 3.7.1.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 22460f0a62cc49e5afb43b7c8a9053e2992a9f43 (Commit)
- 32c086193777fe8297fcc0ccda2df396a4d477e7 (Commit)

## Referenzen

- <https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc>
- <https://github.com/traefik/traefik/releases/tag/v2.11.46>
- <https://github.com/traefik/traefik/releases/tag/v3.6.17>
- <https://github.com/traefik/traefik/releases/tag/v3.7.1>
- <https://access.redhat.com/errata/RHSA-2026:36820>
- <https://access.redhat.com/security/cve/CVE-2026-44774>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2477937>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44774.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-44774) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_