CVE-2026-18677
Medium
Description
In Kong Mesh running in universal mode with a MeshIdentity whose SPIFFE ID path template derives from the dataplane's kuma.io/workload label, the XDS authenticator in kuma-cp validates that label only when the dataplane token is bound to a workload. Workload binding is optional, so a dataplane presenting a tags-bound token can register with kuma.io/workload set to any value and obtain another workload's SPIFFE identity.
SeverityMedium
CVSS6.0
Exploit probability—
ProductKong Mesh
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-290CWE-290
How to fix
Update
- Kong Inc. Kong Mesh2.13.10, 2.14.2 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Kong Inc. Kong Mesh | 2.13.0 ≤ v < 2.13.10, 2.14.0 ≤ v < 2.14.2 | 2.13.10, 2.14.2 |
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