Bug 2512294 (CVE-2026-71327) - CVE-2026-71327 github.com/traefik/traefik: Traefik: Cross-namespace backend hijacking due to Gateway API identity collision
Summary: CVE-2026-71327 github.com/traefik/traefik: Traefik: Cross-namespace backend h...
Keywords:
Status: NEW
Alias: CVE-2026-71327
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-06 22:27 UTC by OSIDB Bzimport
Modified: 2026-08-26 16:52 UTC (History)
4 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-06 22:27:46 UTC 
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.
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