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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-18674 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Kong
CVSS-B 7.0 HIGH
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

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://developer.konghq.com/mesh/changelog/ Kong
https://github.com/kumahq/kuma/pull/17456 Kong
https://github.com/kumahq/kuma/pull/17458 Kong
https://github.com/kumahq/kuma/pull/17459 Kong
https://github.com/kumahq/kuma/pull/17460 Kong
https://github.com/kumahq/kuma/pull/17461 Kong
https://github.com/kumahq/kuma/pull/17462 Kong
https://github.com/kumahq/kuma/pull/17463 Kong
https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4 Kong

Weakness Enumeration

CWE-ID CWE Name Source
CWE-345 Insufficient Verification of Data Authenticity Kong  
CWE-863 Incorrect Authorization Kong  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-18674
NVD Published Date:
08/17/2026
NVD Last Modified:
08/17/2026
Source:
Kong