CVE-2026-18679
MediumCVSS 5.8Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
When kuma-dp is started against an HTTPS control plane without a CA certificate, TLS peer verification is disabled and the dataplane authentication token is sent over that unverified connection.
Risk Assessment
An on-path attacker can intercept the token and impersonate the control plane, injecting a forged bootstrap configuration and taking over the proxy.
Recommendation
Always provide a CA certificate when configuring kuma-dp for HTTPS control planes.
Original NVD description (English source)
When kuma-dp is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled, and the dataplane authentication token is sent over that unverified connection. An on-path actor can intercept the dataplane authentication token and impersonate the control plane to the data plane, injecting a forged bootstrap configuration and taking over the proxy.