CVE-2026-18677

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.

CVSS

No CVSS.

References

Link	Resource
https://developer.konghq.com/mesh/changelog/
https://github.com/kumahq/kuma/pull/17474
https://github.com/kumahq/kuma/pull/17502
https://github.com/kumahq/kuma/pull/17503
https://github.com/kumahq/kuma/security/advisories/GHSA-744g-c785-x65q

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-12 19:17

Updated : 2026-08-31 19:22

NVD link : CVE-2026-18677

Mitre link : CVE-2026-18677

CVE.ORG link : CVE-2026-18677

JSON object : View

Products Affected

No product.

CWE

CWE-290

Authentication Bypass by Spoofing

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