Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the New HTTP server setup in routesrv/routesrv.go and the /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards handlers. An attacker can read cluster-wide route topology a...

CVE-2026-54246

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards. The handlers registered in...

CVE-2026-54246 Skipper routesrv-no-auth: All routesrv API Endpoints Lack Authentication

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards. The handlers registered in...

CVE-2026-54246 Skipper routesrv-no-auth: All routesrv API Endpoints Lack Authentication

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards. The handlers registered in...

CVE-2026-54246

CVE-2026-54246 affects the routesrv component of Skipper (Zalando's HTTP router and reverse proxy). Prior to version 0.27.13 , routesrv serves cluster-wide control-plane data—Ingress/RouteGroup backend URLs, filter-chain and OAuth/OIDC path details, and Redis/Valkey shard addresses—over plain HTT...

EUVD-2026-78061

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards. The handlers registered in...

CVE-2026-54246 Skipper routesrv-no-auth: All routesrv API Endpoints Lack Authentication

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards. The handlers registered in...

CVE-2026-54246: Missing Authentication for Critical Function

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/zone, /swarm/redis/shards, and /swarm/valkey/shards. The handlers registered in...

GO-2026-6018 Skipper's routesrv-no-auth component: All routesrv API Endpoints Lack Authentication in github.com/zalando/skipper

Skipper's routesrv-no-auth component: All routesrv API Endpoints Lack Authentication in github.com/zalando/skipper...

Sensitive Information Disclosure

routesrv is vulnerable to Sensitive Information Disclosure. The vulnerability is due to the lack of authentication on HTTP endpoints exposing routing and cache topology data, which allows an attacker with network access to retrieve sensitive cluster-wide configuration and infrastructure informati...

Skipper's routesrv-no-auth component: All routesrv API Endpoints Lack Authentication

Description The routesrv component exposes the full cluster route topology Ingress/RouteGroup configurations, backend URLs, filter chains, OAuth/OIDC callback paths and cache-cluster topology Redis/Valkey shard addresses over plain HTTP with zero authentication. Any pod in the Kubernetes cluster...

GHSA-5587-2X54-JJ6H Skipper's routesrv-no-auth component: All routesrv API Endpoints Lack Authentication

Description The routesrv component exposes the full cluster route topology Ingress/RouteGroup configurations, backend URLs, filter chains, OAuth/OIDC callback paths and cache-cluster topology Redis/Valkey shard addresses over plain HTTP with zero authentication. Any pod in the Kubernetes cluster...

PT-2026-60892

Name of the Vulnerable Software and Affected Versions Skipper affected versions not specified Description The routesrv component exposes sensitive cluster-wide routing and cache infrastructure data over plain HTTP without any authentication. This allows any pod within the Kubernetes cluster to...