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CVE-2026-18676

nvd nist
Published: Aug 12, 2026Modified: Aug 31, 2026

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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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb (Secondary)

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.

Related CWEs

CWE-346
Origin Validation Error
The product does not properly verify that the source of data or communication is valid.
CWE-942
Permissive Cross-domain Policy with Untrusted Domains
The product uses a cross-domain policy file that includes domains that should not be trusted.

References (8)

Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb

Timeline

No history available yet.