{"id":"CVE-2026-18676","sourceIdentifier":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","published":"2026-08-12T19:17:30.813","lastModified":"2026-10-23T19:10:00.167","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"The default kuma-cp configuration in Kong Mesh reveals the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. Due to a CORS misconfiguration a cross-origin fetch() from a malicious page returns the admin JWT and signing material."},{"lang":"es","value":"La configuración predeterminada de kuma-cp en Kong Mesh revela el token de arranque de administrador y las claves de firma a cualquier página web que el operador visita mientras el plano de control es accesible desde su navegador. Debido a una configuración incorrecta de CORS, una llamada fetch() de origen cruzado desde una página maliciosa devuelve el JWT de administrador y el material de firma."}],"affected":[{"source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","affectedData":[{"vendor":"Kong Inc.","product":"Kong Mesh","defaultStatus":"unaffected","modules":["kuma-cp"],"platforms":["Linux"],"versions":[{"version":"0","lessThan":"2.7.25","versionType":"semver","status":"affected"},{"version":"2.8.0","lessThan":"2.9.15","versionType":"semver","status":"affected"},{"version":"2.10.0","lessThan":"2.11.13","versionType":"semver","status":"affected"},{"version":"2.12.0","lessThan":"2.12.10","versionType":"semver","status":"affected"},{"version":"2.13.0","lessThan":"2.13.5","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-13T14:50:34.609630Z","id":"CVE-2026-18676","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","type":"Secondary","description":[{"lang":"en","value":"CWE-346"},{"lang":"en","value":"CWE-942"}]}],"references":[{"url":"https://developer.konghq.com/mesh/changelog/","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/16416","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/16423","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/16424","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/16425","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/16426","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/16427","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"}]}