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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-71327

CVE-2026-71327: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityHigh8.5

    High [CVE-2026-71327] Cross-namespace backend hijacking due to Gateway API identity collision

    CVE-2026-71327Source published Source updated

    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. Its Kubernetes Gateway API provider incorrectly generates unique identifiers for routes and services. This vulnerability allows an attacker to create conflicting routes, which can then overwrite the backend services of another isolated environment (namespace). This could lead…

    Affected products in this advisory
    • Red Hat OpenShift Dev Spaces
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 3.6.25
    • 3.7.10
    Mitigation guidance
    • To mitigate this flaw, restrict RBAC permissions to prevent untrusted tenants from creating or modifying Kubernetes Gateway API route resources (HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute). Alternatively, deploy isolated Traefik ingress controller instances with single-namespace scope enforcement.
    Full advisory and evidenceOpen source bulletin

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