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CVE-2026-71327

CVE-2026-71327 · Traefik: Gateway API route identity collision allows cross-namespace backend hijacking

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Traefik is an open source HTTP reverse proxy and load balancer. From 3.0.0 until 3.6.25 and 3.7.10, Traefik's Kubernetes Gateway API provider in pkg/provider/kubernetes/gateway/httproute.go, grpcroute.go, tcproute.go, and tlsroute.go builds HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute router and service identities by hyphen-concatenating namespace, route name, Gateway identity, entry point, and rule index, allowing colliding Routes to overwrite another namespace's backend. This issue is fixed in 3.6.25 and 3.7.10.

CVSS 7.6 · High · EPSS 0.5%

Published
Updated

Stack: web

Affected products and versions

  • traefik

    Versions
    • >= 3.0.0, < 3.6.25: Affected
    • >= 3.7.0, < 3.7.10: Affected

    No fix published

Original sources

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