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.
Published: 2026-09-15
Score: 5.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-wvmp-6r4v-j6cv kuma-dp connects to control plane without verifying TLS certificate when no CA is configured
History

Tue, 15 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Kumahq
Kumahq kuma
Vendors & Products Kumahq
Kumahq kuma

Tue, 15 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 15 Sep 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title kuma-dp connects to control plane without verifying TLS certificate when no CA is configured
Weaknesses CWE-295
References
Metrics cvssV4_0

{'score': 5.8, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-15T15:21:20.402Z

Reserved: 2026-06-08T14:00:43.571Z

Link: CVE-2026-52724

cve-icon Vulnrichment

Updated: 2026-09-15T15:20:34.771Z

cve-icon NVD

Status : Received

Published: 2026-09-15T15:17:17.110

Modified: 2026-09-15T16:17:12.540

Link: CVE-2026-52724

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T16:30:11Z

Weaknesses
  • CWE-295

    Improper Certificate Validation