CVE-2026-18673: Kong Inc Kong Mesh

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication. An attacker with network access to a data plane's port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.

Affected products

• Kong Inc Kong Mesh: from 2.14.0, before 2.14.2 (fixed in 2.14.2)

Published 2026-08-12. Last modified 2026-08-31.