Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication (CVE-2026-18673) | HOL Guard CVE

Medium · CVSS 5.3CVE-2026-18673

Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication

Answer in brief

CVE-2026-18673 records a Medium severity (CVSS 5.3) vulnerability in Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication. 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 12, 2026Updated Aug 31, 2026Source checked Sep 27, 2026First seen by HOL Aug 12, 2026Material review Aug 31, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. 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
Package	Affected range	Fixed version
Kong Inc./Kong Meshgeneric	>=2.14.0 <2.14.2	2.14.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Kong Inc./Kong Mesh.
Review the reported fix. Update Kong Inc./Kong Mesh to 2.14.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Upstream source description

When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication. An attacker with network access to a data plane's port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.

Quoted source text, attributed separately from HOL analysis.