Description
Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespaces. Attackers able to create or update Ingress or Service resources in one namespace can set router.middlewares or service.serverstransport annotations to obtain another tenant's injected credentials or reuse its client certificates, bypassing namespace-based tenant isolation.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
traefik traefik
Default version status: unaffected
0 to < 2.11.46affected2.11.46unaffected
pkg:golang/github.com/traefik/traefik/v2traefik traefik
Default version status: unaffected
3.0.0 to < 3.6.17affected3.6.17unaffected
pkg:golang/github.com/traefik/traefik/v3traefik traefik
Default version status: unaffected
3.7.0 to < 3.7.1affected3.7.1unaffected
pkg:golang/github.com/traefik/traefik/v3