CVE-2026-18674

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.

CVSS

No CVSS.

References

Link	Resource
https://developer.konghq.com/mesh/changelog/
https://github.com/kumahq/kuma/pull/17456
https://github.com/kumahq/kuma/pull/17458
https://github.com/kumahq/kuma/pull/17459
https://github.com/kumahq/kuma/pull/17460
https://github.com/kumahq/kuma/pull/17461
https://github.com/kumahq/kuma/pull/17462
https://github.com/kumahq/kuma/pull/17463
https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-17 13:16

Updated : 2026-08-31 19:22

NVD link : CVE-2026-18674

Mitre link : CVE-2026-18674

CVE.ORG link : CVE-2026-18674

JSON object : View

Products Affected

No product.

CWE

CWE-345

Insufficient Verification of Data Authenticity

CWE-863

Incorrect Authorization

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