CVE-2026-18675 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionThe 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. Metrics
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CVSS 4.0 Severity and Vector Strings:
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