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.
History

Thu, 13 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 13 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Konghq
Konghq kong Mesh
Vendors & Products Konghq
Konghq kong Mesh

Wed, 12 Aug 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Kong Mesh: default control plane config leaks the admin token cross-origin via a CORS wildcard and localhost admin
Weaknesses CWE-346
CWE-942
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Kong

Published:

Updated: 2026-08-13T14:50:43.069Z

Reserved: 2026-08-03T15:20:44.526Z

Link: CVE-2026-18676

cve-icon Vulnrichment

Updated: 2026-08-13T14:50:40.227Z

cve-icon NVD

Status : Received

Published: 2026-08-12T19:17:30.813

Modified: 2026-08-13T15:19:35.967

Link: CVE-2026-18676

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T09:48:09Z