CVE-2026-18675

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,...

CVE-2026-18675

The vulnerability CVE-2026-18675 affects Kuma Kuma CP’s dataplane token validator, which uses an unchecked Go type assertion on the JWT kid header. If a token’s kid is a JSON number, it decodes as a float64 and triggers a runtime panic before signatures, claims, or authorization checks run. This ...