CVE-2026-18676
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.1
- CVSS 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
- EPSS probability
- 0.23%
- CWE
- CWE-346, CWE-942
- Published
- 2026-08-12
- Last modified
- 2026-08-13
Affected products
- Kong Inc. Kong Mesh
- Kong Inc. Kong Mesh
- Kong Inc. Kong Mesh
- Kong Inc. Kong Mesh
- Kong Inc. Kong Mesh
Weakness type
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