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vuln-cve/data/2026/18xxx/CVE-2026-18673.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-18673",
"assignerOrgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
"state": "PUBLISHED",
"assignerShortName": "Kong",
"dateReserved": "2026-08-03T15:18:30.454Z",
"datePublished": "2026-08-12T18:20:33.205Z",
"dateUpdated": "2026-08-13T14:54:00.482Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
"shortName": "Kong",
"dateUpdated": "2026-08-12T18:20:33.205Z"
},
"title": "Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-200",
"description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-306",
"description": "CWE-306 Missing Authentication for Critical Function",
"type": "CWE"
}
]
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "Information Disclosure"
}
]
}
],
"affected": [
{
"vendor": "Kong Inc.",
"product": "Kong Mesh",
"platforms": [
"Linux"
],
"modules": [
"kuma-dp"
],
"versions": [
{
"status": "affected",
"version": "2.14.0",
"lessThan": "2.14.2",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "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.\n\n\n\nAn 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.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>When <code>kuma-dp</code> 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.</p><p>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.</p>"
}
]
}
],
"references": [
{
"url": "https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w",
"name": "Upstream advisory GHSA-r9pv-x3pm-4r2w",
"tags": [
"vendor-advisory"
]
},
{
"url": "https://github.com/kumahq/kuma/pull/17317",
"name": "kumahq/kuma#17317 (master)",
"tags": [
"patch"
]
},
{
"url": "https://github.com/kumahq/kuma/pull/17418",
"name": "kumahq/kuma#17418 (release-2.14 backport)",
"tags": [
"patch"
]
},
{
"url": "https://developer.konghq.com/mesh/changelog/",
"name": "Kong Product Security Advisories",
"tags": [
"vendor-advisory"
]
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV4_0": {
"attackVector": "ADJACENT",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "MEDIUM",
"baseScore": 5.3,
"vectorString": "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"
}
}
],
"configurations": [
{
"lang": "en",
"value": "You are affected if you run kuma-dp on the 2.14 line with the Envoy admin API on a Unix domain socket (the default) and TCP port 9902 is reachable from the pod or cluster network.\n\n\n\nYou are not affected if:\n\n * You run a release line before 2.14. There the readiness service exposes only /ready.\n * Port 9902 is not reachable by untrusted workloads.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>You are affected if you run <code>kuma-dp</code> on the 2.14 line with the Envoy admin API on a Unix domain socket (the default) and TCP port 9902 is reachable from the pod or cluster network.</p><p>You are not affected if:</p><ul><li>You run a release line before 2.14. There the readiness service exposes only <code>/ready</code>.</li><li>Port 9902 is not reachable by untrusted workloads.</li></ul>"
}
]
}
],
"workarounds": [
{
"lang": "en",
"value": "Restrict network access to port 9902 to trusted monitoring only, for example with a Kubernetes NetworkPolicy.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>Restrict network access to port 9902 to trusted monitoring only, for example with a Kubernetes NetworkPolicy.</p>"
}
]
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to Kong Mesh 2.14.2. In patched versions the readiness reporter serves only /ready; the Envoy admin API stays on the Unix domain socket, which is not reachable over the pod network.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>Upgrade to Kong Mesh 2.14.2. In patched versions the readiness reporter serves only <code>/ready</code>; the Envoy admin API stays on the Unix domain socket, which is not reachable over the pod network.</p>"
}
]
}
],
"timeline": [
{
"time": "2026-08-01T16:58:00.000Z",
"lang": "en",
"value": "Kong Mesh 2.14.2 published"
}
],
"credits": [
{
"lang": "en",
"value": "https://hackerone.com/zoom9797",
"type": "finder"
}
],
"source": {
"discovery": "EXTERNAL"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-13T14:53:48.881667Z",
"id": "CVE-2026-18673",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-13T14:54:00.482Z"
}
}
]
}
}