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  4. CVE 2026 18674 kong mesh multi zone the global control plane
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Back to active CVEs
High · CVSS 7.0CVE-2026-18674

Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier

Answer in brief

CVE-2026-18674 records a High severity (CVSS 7.0) vulnerability in Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier. The current sources do not mark it as known exploited. The current feed maps Kong Inc./Kong Mesh (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 17, 2026Updated Aug 31, 2026Source checked Oct 1, 2026First seen by HOL Aug 17, 2026Material review Aug 31, 2026
Upstream Advisory

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-345, CWE-863
Source
CVE List V5
Source checked
Oct 1, 2026
References
9 linked sources
Open source record

Key facts

Risk
High · CVSS 7.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Kong Inc./Kong Mesh (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Kong Inc./Kong Meshgeneric>=0 <2.7.29 || >=2.8.0 <2.9.19 || >=2.10.0 <2.11.18 || >=2.12.0 <2.12.14 || >=2.13.0 <2.13.10 || >=2.14.0 <2.14.22.7.29, 2.9.19, 2.11.18, 2.12.14, 2.13.10, 2.14.2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Kong Inc./Kong Mesh.
  2. 2Review the reported fix. Update Kong Inc./Kong Mesh to 2.7.29 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 17, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 17, 2026

Sources and claim methodology

  • Source referencedeveloper.konghq.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.