---
cve: "CVE-2026-32695"
severity: "MEDIUM"
cvss: 6.3
epss: "0.5%"
vendor: "traefik"
kev: false
exploited: false
published: "2026-03-27 13:47:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:07:16+02:00"
---

# CVE-2026-32695

> 6.3 MEDIUM · 🧪 PoC

## Beschreibung

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 3.6.11 and 3.7.0-ea.2, Traefik's Knative provider builds router rules by interpolating user-controlled values into backtick-delimited rule expressions without escaping. In live cluster validation, Knative `rules[].hosts[]` was exploitable for host restriction bypass (for example `tenant.example.com`) || Host(`attacker.com`), producing a router that serves attacker-controlled hosts. Knative `headers[].exact` also allows rule-syntax injection and proves unsafe rule construction. In multi-tenant clusters, this can route unauthorized traffic to victim services and lead to cross-tenant traffic exposure. Versions 3.6.11 and 3.7.0-ea.2 patch the issue.

## CVSS-Vektor

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

- 33219a0af86c41a8db81d37c444f65172bfb3e35 (Commit)
- d7de8ee4f32d2634f729fda28ba451acfc79f724 (Commit)

## Referenzen

- <https://github.com/traefik/traefik/security/advisories/GHSA-67jx-r9pv-98rj>
- <https://github.com/traefik/traefik/releases/tag/v3.6.11>
- <https://github.com/traefik/traefik/releases/tag/v3.7.0-ea.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-32695) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_