CVE-2026-18676 — Kong Mesh: default control plane config leaks the admin token cross-origin via a CORS wildcard and localhost admin
The default kuma-cp configuration in Kong Mesh reveals the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from th…
Published: 2026-08-12 · CVSS: 5.1 · CVSS 4.0
The default kuma-cp configuration in Kong Mesh reveals the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. Due to a CORS misconfiguration a cross-origin fetch() from a malicious page returns the admin JWT and signing material.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7