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CVE-2026-52724— kuma-dp connects to control plane without verifying TLS certificate when no CA is configured

Quick assessment

Affected
kumahq kuma
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 是一个基于 Envoy 构建的现代服务网格，可运行在各类云环境中的 Kubernetes 和虚拟机上。在 2.7.26、2.9.16、2.11.14、2.12.11 和 2.13.7 之前的版本中，如果未提供 参数且环境变量 未设置，Universal 模式下 kuma-dp 连接到 HTTPS 控制平面时会禁用 TLS 对等方验证。由于数据平面认证令牌将通过未经验证的连接发送，路径上的攻击者可能拦截该令牌、冒充控制平面、注入伪造的 bootstrap 配置，并最终接管代理进程。 通过 或官方 Helm

CVSS 5.8 · Medium
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I. Basic Information for CVE-2026-52724

Vulnerability Information
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Vulnerability Title
kuma-dp connects to control plane without verifying TLS certificate when no CA is configured
Source: CVE Program / CVE List V5
Vulnerability Description
Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7, Universal mode kuma-dp connections to an HTTPS control plane disable TLS peer verification when --ca-cert-file is not supplied and KUMA_CONTROL_PLANE_CA_CERT is unset. The dataplane authentication token is sent over the unverified connection, allowing an on-path attacker to intercept the token, impersonate the control plane, inject a forged bootstrap configuration, and take over the proxy. Standard Kubernetes installations created by kumactl install control-plane or the official Helm chart are unaffected because the mutating admission webhook injects KUMA_CONTROL_PLANE_CA_CERT into each sidecar. This issue is fixed in versions 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
kumahq kuma < 2.7.26 -

II. Public POCs for CVE-2026-52724

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III. Intelligence Information for CVE-2026-52724

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Patches & Fixes for CVE-2026-52724 (7)

Vendor Advisories for CVE-2026-52724 (1)

IV. Related Vulnerabilities

Same product: kuma
Same vendor: kumahq
Same weakness: CWE-295

V. Comments for CVE-2026-52724

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