CVE-2026-18675
NONE—CVSS v3
—CVSS v2
0.38%
EPSS (exploit probability)
CWE-248CWE
Description
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.
Affected routers (0)
No routers currently mapped to this CVE in our database.