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CVE-2026-18673— Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication

Quick assessment

Affected
Kong Inc. Kong Mesh
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kuma是Kuma组织开源的一个基于 Envoy 的现代化服务网格，可在任何云平台上运行，支持单区域或多区域部署，并兼容 Kubernetes 和虚拟机。 Kuma 2.14.0版本至2.14.2之前版本存在安全漏洞，该漏洞源于Envoy admin API无身份验证转发，可能导致攻击者读取Envoy和数据平面配置。

CVSS 5.3 · Medium EPSS 0.46% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
Kong Inc. Kong Mesh 2.14.0< 2.14.2 affected
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I. Basic Information for CVE-2026-18673

Vulnerability Information
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Vulnerability Title
Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Kuma 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kuma是Kuma组织开源的一个基于 Envoy 的现代化服务网格，可在任何云平台上运行，支持单区域或多区域部署，并兼容 Kubernetes 和虚拟机。 Kuma 2.14.0版本至2.14.2之前版本存在安全漏洞，该漏洞源于Envoy admin API无身份验证转发，可能导致攻击者读取Envoy和数据平面配置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kong Inc. Kong Mesh 2.14.0 ~ 2.14.2 -

II. Public POCs for CVE-2026-18673

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III. Intelligence Information for CVE-2026-18673

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Patches & Fixes for CVE-2026-18673 (3)

Vendor Advisories for CVE-2026-18673 (1)

Same Patch Batch · Kong Inc. · 2026-08-12 · 6 CVEs total

CVE-2026-18677 6.0 MEDIUM Kong Mesh: a dataplane token without a workload binding can claim any workload's SPIFFE id
CVE-2026-18679 5.8 MEDIUM Kong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate whe
CVE-2026-18678 5.5 MEDIUM Kong Mesh: kumactl connects to the control plane without verifying the TLS certificate whe
CVE-2026-18675 5.3 MEDIUM Kong Mesh: control plane denial of service via a malformed dataplane token with a non-stri
CVE-2026-18676 5.1 MEDIUM Kong Mesh: default control plane config leaks the admin token cross-origin via a CORS wild

IV. Related Vulnerabilities

Same product: Kong Mesh
Same vendor: Kong Inc.
Same weakness: CWE-200

V. Comments for CVE-2026-18673

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