249 lines
12 KiB
JSON
249 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-18679",
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"assignerOrgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
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"state": "PUBLISHED",
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"assignerShortName": "Kong",
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"dateReserved": "2026-08-03T15:20:48.055Z",
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"datePublished": "2026-08-12T18:52:31.146Z",
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"dateUpdated": "2026-08-13T14:45:35.957Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
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"shortName": "Kong",
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"dateUpdated": "2026-08-12T18:52:31.146Z"
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},
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"title": "Kong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate when no CA is configured",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-295",
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"description": "CWE-295 Improper Certificate Validation",
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"type": "CWE"
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}
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]
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}
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],
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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "Control plane impersonation"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "Kong Inc.",
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"product": "Kong Mesh",
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"platforms": [
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"Linux"
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],
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"modules": [
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"kuma-dp"
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],
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThan": "2.7.26",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "2.8.0",
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"lessThan": "2.9.16",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "2.10.0",
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"lessThan": "2.11.14",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "2.12.0",
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"lessThan": "2.12.11",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "2.13.0",
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"lessThan": "2.13.7",
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"versionType": "semver"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"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.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"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>"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv",
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"name": "Upstream advisory GHSA-wvmp-6r4v-j6cv",
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"tags": [
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"vendor-advisory"
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]
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},
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{
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"url": "https://github.com/kumahq/kuma/pull/16777",
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"name": "kumahq/kuma#16777 (master)",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://developer.konghq.com/mesh/changelog/",
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"name": "Kong MESH Changelog",
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"tags": [
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"release-notes"
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]
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV4_0": {
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"attackVector": "ADJACENT",
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"attackComplexity": "HIGH",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "NONE",
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"subIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subAvailabilityImpact": "HIGH",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "MEDIUM",
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"baseScore": 5.8,
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"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"
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}
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}
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],
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"configurations": [
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{
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"lang": "en",
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"value": "You are affected if you run universal mode kuma-dp against an HTTPS control plane without --ca-cert-file, or with KUMA_CONTROL_PLANE_CA_CERT unset.\n\n\n\nYou are not affected if you install on Kubernetes through kumactl install control-plane or the official Kong Mesh Helm chart. 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.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>You are affected if you run universal mode <code>kuma-dp</code> against an HTTPS control plane without <code>--ca-cert-file</code>, or with <code>KUMA_CONTROL_PLANE_CA_CERT</code> unset.</p><p>You are not affected if you install on Kubernetes through <code>kumactl install control-plane</code> or the official Kong Mesh Helm chart. In both cases the control plane's mutating admission webhook injects <code>KUMA_CONTROL_PLANE_CA_CERT</code> into every sidecar at pod admission, so each <code>kuma-dp</code> starts with the CA already configured.</p>"
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}
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]
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "Set --ca-cert-file, or KUMA_CONTROL_PLANE_CA_CERT, on every universal mode data plane and point it at the control plane's serving CA. Alternatively terminate the control plane behind a publicly trusted certificate.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>Set <code>--ca-cert-file</code>, or <code>KUMA_CONTROL_PLANE_CA_CERT</code>, on every universal mode data plane and point it at the control plane's serving CA. Alternatively terminate the control plane behind a publicly trusted certificate.</p>"
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}
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]
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "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. Patched releases fall back to the operating system trust store instead of disabling verification, so a publicly trusted control plane certificate verifies with no further configuration. The 2.14 line shipped after the fix and was never affected.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"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. Patched releases fall back to the operating system trust store instead of disabling verification, so a publicly trusted control plane certificate verifies with no further configuration. The 2.14 line shipped after the fix and was never affected.</p>"
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}
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]
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}
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],
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"timeline": [
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{
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"time": "2026-06-03T20:20:00.000Z",
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"lang": "en",
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"value": "Kong Mesh patched releases published"
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},
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{
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"time": "2026-07-16T16:42:00.000Z",
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"lang": "en",
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"value": "Upstream advisory GHSA-wvmp-6r4v-j6cv published"
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}
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],
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"source": {
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"discovery": "INTERNAL"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-13T14:45:22.142897Z",
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"id": "CVE-2026-18679",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-13T14:45:35.957Z"
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}
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}
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]
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}
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} |