{"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": "2026-08-12T18:20:33.205Z"}, "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"}}}}

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