Medium
kuma-dp connects to control plane without verifying TLS certificate when no CA is configured
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-18679, CVE-2026-52724
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 07:54 UTC · Revision 1
Source evidence
kuma-dp connects to control plane without verifying TLS certificate when no CA is configured
core-osv · Original sourcePublished 15 Sept 2026, 14:50 UTC
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.
osv:CVE-2026-52724
Complete source record
{
"id": "10f7de0fc365f1d868cbf69a973c6f55e25ae12a2143b6f74dc7da814ca90291",
"url": "https://osv.dev/vulnerability/CVE-2026-52724",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "kuma-dp connects to control plane without verifying TLS certificate when no CA is configured",
"summary": "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.",
"evidence": "osv:CVE-2026-52724",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-52724",
"aliases": [
"CVE-2026-18679",
"CVE-2026-52724",
"GHSA-wvmp-6r4v-j6cv",
"GO-2026-6013"
],
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{
"type": "CVSS_V4",
"score": "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"
}
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52724.json"
}
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],
"modified": "2026-10-28T02:30:33.615818459Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52724.json",
"https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv",
"https://nvd.nist.gov/vuln/detail/CVE-2026-52724",
"https://github.com/kumahq/kuma/commit/2d0fb382924598f8746bc85c896f50384675940f",
"https://github.com/kumahq/kuma/commit/85716397ffa404234bf365da0967eca0b0fa1870",
"https://github.com/kumahq/kuma/commit/a256af4869ae7e0ebbc2a14dc231e04ac8df1ba3",
"https://github.com/kumahq/kuma/commit/bb56ae628753aaec1f7846a514ab4edc35c0b569",
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"https://github.com/kumahq/kuma/pull/16777"
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"related_cves": [
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"evidence": "/aliases"
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{
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"severity_evidence": "/severity/0/score"
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"source_id": "core-osv",
"document_id": 500984,
"published_at": "2026-09-15T14:50:32.257+00:00"
}