Auth bypass in Traefik

CVE-2026-71326

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basic_auth.go deduplicates concurrent password checks with a singleflight key built…

Vulnerability class: Broken Authentication

Affected products

  • Traefik — versions >= 3.6.11, < 3.6.25, >= 3.7.0, < 3.7.10

Weakness classification (CWE)

References