CVE-2026-18675mediumCWE-248CWE-704

CVE-2026-18675: fallo de gravedad media en Kong Mesh

Kong Mesh: control plane denial of service via a malformed dataplane token with a non-string JWT kid

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear Kong Mesh

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.3epss 0.6%
The dataplane token validator in kuma-cp performs an unchecked Go type assertion on the JWT kid header. A token whose kid is a JSON number decodes as a float64 and triggers a runtime panic before any signature, claims, or authorization check runs. The panic terminates the entire kuma-cp process, HTTP API, the health and readiness endpoints, and xDS. Unauthenticated access to the dataplane gRPC server can trigger the crash with a malformed token A single request is a transient interruption; sustaining an outage requires repeated requests.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Productos afectados
Kong Inc. · Kong Mesh
CVEs relacionadas — Kong Mesh

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-18677MEDIUMKong Mesh: a dataplane token without a workload binding can claim any workload's SPIFFE identityEPSS 0.6%CVE-2026-18674HIGHKong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifierEPSS 0.6%CVE-2026-18673MEDIUMKong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authenticationEPSS 0.5%CVE-2026-18676MEDIUMKong Mesh: default control plane config leaks the admin token cross-origin via a CORS wildcard and localhost adminEPSS 0.3%CVE-2026-18679MEDIUMKong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate when no CA is configuredEPSS 0.2%CVE-2026-18678MEDIUMKong Mesh: kumactl connects to the control plane without verifying the TLS certificate when no CA is configuredEPSS 0.1%