CVE-2026-18679

Description

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.

References

• https://developer.konghq.com/mesh/changelog/
• https://github.com/kumahq/kuma/pull/16777
• https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv