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CVE-2026-18679— Kong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate when no CA is configured

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 2.7.26之前版本、2.8.0至2.9.16之前版本、2.10.0至2.11.14之前版本、2.12.0至2.12.11之前版本和2.13.0至2.13.7之前版本存在加密问题漏洞，该漏洞源于TLS对端验证被禁用，可能导致中间人攻击者拦截数据平面认证令牌并冒充控制平面，注入伪造的引导配置从而接管代理。

CVSS 5.8 · Medium EPSS 0.16% · P4

Affected Version Matrix 5

VendorProduct Version RangeStatus
Kong Inc. Kong Mesh < 2.7.26 affected
2.8.0< 2.9.16 affected
2.10.0< 2.11.14 affected
2.12.0< 2.12.11 affected
2.13.0< 2.13.7 affected
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I. Basic Information for CVE-2026-18679

Vulnerability Information
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Vulnerability Title
Kong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate when no CA is configured
Source: CVE Program / CVE List V5
Vulnerability Description
When kuma-dp is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled, and the dataplane authentication token is sent over that unverified connection. An on-path actor can intercept the dataplane authentication token and impersonate the control plane to the data plane, injecting a forged bootstrap configuration and taking over the proxy.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kuma 加密问题漏洞
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 2.7.26之前版本、2.8.0至2.9.16之前版本、2.10.0至2.11.14之前版本、2.12.0至2.12.11之前版本和2.13.0至2.13.7之前版本存在加密问题漏洞，该漏洞源于TLS对端验证被禁用，可能导致中间人攻击者拦截数据平面认证令牌并冒充控制平面，注入伪造的引导配置从而接管代理。
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 0 ~ 2.7.26 -

II. Public POCs for CVE-2026-18679

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III. Intelligence Information for CVE-2026-18679

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Patches & Fixes for CVE-2026-18679 (2)

Vendor Advisories for CVE-2026-18679 (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-2026-18678 5.5 MEDIUM Kong Mesh: kumactl connects to the control plane without verifying the TLS certificate whe
CVE-2026-18673 5.3 MEDIUM Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authenticatio
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-295

V. Comments for CVE-2026-18679

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