{"api_version":"1","generated_at":"2026-10-04T01:01:05+00:00","cve":"CVE-2026-18679","urls":{"html":"https://cve.report/CVE-2026-18679","api":"https://cve.report/api/cve/CVE-2026-18679.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-18679","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-18679"},"summary":{"title":"Kong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate when no CA is configured","description":"When kuma-dp is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled, and the dataplane authentication token is sent over that unverified connection.\n\n\n\nAn on-path actor can intercept the dataplane authentication token and impersonate the control plane to the data plane, injecting a forged bootstrap configuration and taking over the proxy.","state":"PUBLISHED","assigner":"Kong","published_at":"2026-08-12 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In both cases the control plane's mutating admission webhook injects KUMA_CONTROL_PLANE_CA_CERT into every sidecar at pod admission, so each kuma-dp starts with the CA already configured."}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>When <code>kuma-dp</code> is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled, and the dataplane authentication token is sent over that unverified connection.</p><p>An on-path actor can intercept the dataplane authentication token and impersonate the control plane to the data plane, injecting a forged bootstrap configuration and taking over the proxy.</p>"}],"value":"When kuma-dp is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled, and the dataplane authentication token is sent over that unverified connection.\n\n\n\nAn on-path actor can intercept the dataplane authentication token and impersonate the control plane to the data plane, injecting a forged bootstrap configuration and taking over the proxy."}],"impacts":[{"descriptions":[{"lang":"en","value":"Control plane impersonation"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":5.8,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","description":"CWE-295 Improper Certificate Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-12T18:52:31.146Z","orgId":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","shortName":"Kong"},"references":[{"name":"Upstream advisory GHSA-wvmp-6r4v-j6cv","tags":["vendor-advisory"],"url":"https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv"},{"name":"kumahq/kuma#16777 (master)","tags":["patch"],"url":"https://github.com/kumahq/kuma/pull/16777"},{"name":"Kong MESH Changelog","tags":["release-notes"],"url":"https://developer.konghq.com/mesh/changelog/"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Upgrade to Kong Mesh 2.7.26, 2.9.16, 2.11.14, 2.12.11 or 2.13.7, whichever matches your release line. 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