Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Traefik | Traefik | < 3.6.11 |
Related Weaknesses (CWE)
References
- https://github.com/traefik/traefik/releases/tag/v3.6.11ProductRelease Notes
- https://github.com/traefik/traefik/releases/tag/v3.7.0-ea.2ProductRelease Notes
- https://github.com/traefik/traefik/security/advisories/GHSA-67jx-r9pv-98rjExploitPatchVendor Advisory
FAQ
What is CVE-2026-32695?
CVE-2026-32695 is a vulnerability with a CVSS score of 7.7 (HIGH). 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-delimi...
How severe is CVE-2026-32695?
CVE-2026-32695 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-32695?
Check the references section above for vendor advisories and patch information. Affected products include: Traefik Traefik.