CVE-2026-71327
Traefik: Gateway API route identity collision allows cross-namespace backend hijacking
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-694 |
| Vendor | traefik |
| Product | traefik |
| Published | Aug 6, 2026 |
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Affected Versions
traefik / traefik
>= 3.0.0, < 3.6.25 >= 3.7.0, < 3.7.10
References
github.com: https://github.com/traefik/traefik/security/advisories/GHSA-fgjj-px3w-67xx github.com: https://github.com/traefik/traefik/pull/13580 github.com: https://github.com/traefik/traefik/commit/a764166656f0cd337f917ac76315c381cca844f9 github.com: https://github.com/traefik/traefik/releases/tag/v3.6.25 github.com: https://github.com/traefik/traefik/releases/tag/v3.7.10