CVE-2026-61682
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
18/09/2026
Última modificación:
24/09/2026
Descripción
*** Pendiente de traducción *** kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.31.4 and 0.32.2, the kcp front-proxy does not remove inbound X-Remote-User, X-Remote-Group, or X-Remote-Extra-* identity headers before forwarding requests to shards. Any authenticated tenant can inject X-Remote-Group: system:masters, authorization.kcp.io/warrant, authentication.kcp.io/scopes, or a group used for per-workspace required-group gating, and the shard trusts these values as authenticated identity assertions. This allows cross-workspace impersonation, authorization bypass, and arbitrary reading, writing, or deletion of resources, secrets, RBAC data, APIExports, APIBindings, and LogicalClusters. This issue is fixed in versions 0.31.4 and 0.32.2.
Impacto
Puntuación base 3.x
9.90
Gravedad 3.x
CRÍTICA
Referencias a soluciones, herramientas e información
- https://github.com/kcp-dev/kcp/commit/7437cdcfec8f927d1a9bf1b2dd1e075d038e27ca
- https://github.com/kcp-dev/kcp/commit/f913ee890fb2fd9fa78e50c43474b078bfb6aeff
- https://github.com/kcp-dev/kcp/releases/tag/v0.31.4
- https://github.com/kcp-dev/kcp/releases/tag/v0.32.2
- https://github.com/kcp-dev/kcp/security/advisories/GHSA-c8w2-fgvx-vhv4