CVSS 10.0 · Critical EPSS 0,61%
Kerentanan Authentication Bypass by Spoofing pada traefik. Skor CVSS 3.1 10.0 (Critical) menurut NVD.
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only canonical header names (e.g., X-Forwarded-Proto) and does not strip or normalize alias variants that use underscores instead of dashes (e.g., X_Forwarded_Proto). These unsanitized alias headers are forwarded intact to the authentication backend. When the backend normalizes underscore and dash header forms equivalently, an attacker can inject spoofed trust context — such as a trusted scheme or host — through the alias headers and bypass authentication on protected routes without valid credentials. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| traefik | traefik | Semua versi sebelum 2.11.43 |
| traefik | traefik | Versi 3.0.0 hingga sebelum 3.6.14 |
| traefik | traefik | Versi 3.7.0 ea1 |
| traefik | traefik | Versi 3.7.0 ea2 |
| traefik | traefik | Versi 3.7.0 ea3 |
| traefik | traefik | Versi 3.7.0 rc1 |