CVE-2026-18674
7.0
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/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 more
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/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
On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones can have the global control plane store and re-distribute those resources as belonging to another zone.
The result is a cross-zone isolation bypass: the holder of a single enrolled zone's credential can inject, attribute, and overwrite resources in another zone's namespace mesh-wide.
The root cause lives in Kuma's open-source KDS sync code, which Kong Mesh's control plane is built on.
Related CWEs
CWE-345
Insufficient Verification of Data Authenticity
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
CWE-863
Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
References (9)
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
Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Timeline
No history available yet.