{"id":"CVE-2026-65599","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-07-22T12:18:20.167","lastModified":"2026-10-24T17:10:00.220","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured with a Google Service Account key, the full PEM private key was mistakenly placed in the JWT header's kid field (intended only for a key identifier). Because JWT headers are Base64-encoded rather than encrypted, the private key could be recovered by anything that logged or inspected the JWT. An attacker who obtained the key could impersonate the service account and access or modify any Google Cloud resource it was authorized to use. Only instances using Google Service Account credentials are affected."},{"lang":"es","value":"Las versiones de n8n anteriores a la 1.123.64, 2.29.8 y 2.30.1 contienen una vulnerabilidad de exposición de credenciales: cuando se configuraba con una clave de cuenta de servicio de Google, la clave privada PEM completa se colocaba erróneamente en el campo kid del encabezado JWT (destinado solo para un identificador de clave). Debido a que los encabezados JWT están codificados en Base64 en lugar de cifrados, la clave privada podía ser recuperada por cualquier cosa que registrara o inspeccionara el JWT. Un atacante que obtuviera la clave podría suplantar la cuenta de servicio y acceder o modificar cualquier recurso de Google Cloud que estuviera autorizado a usar. Solo las instancias que utilizan credenciales de cuenta de servicio de Google se ven afectadas."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"1.123.64","versionType":"semver","status":"affected"},{"version":"1.123.64","versionType":"semver","status":"unaffected"}]},{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"2.30.1","versionType":"semver","status":"affected"},{"version":"2.30.1","versionType":"semver","status":"unaffected"}]},{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"2.29.8","versionType":"semver","status":"affected"},{"version":"2.29.8","versionType":"semver","status":"unaffected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:L/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":"PRESENT","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","subAvailabilityImpact":"LOW","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"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-22T18:20:17.250346Z","id":"CVE-2026-65599","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"disclosure@vulncheck.com","type":"Secondary","description":[{"lang":"en","value":"CWE-312"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*","versionEndExcluding":"1.123.64","matchCriteriaId":"843094AD-81C8-4961-A8A1-037468DEACA7"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*","versionEndExcluding":"1.123.64","matchCriteriaId":"E1626500-EC42-4BF5-8ECE-6E5E249D37F6"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.29.8","matchCriteriaId":"3281592C-CB07-412C-9770-3521447ADEC1"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.29.8","matchCriteriaId":"E4A0C557-F57B-4931-A857-ACC4639C030D"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:*","matchCriteriaId":"E125F7EF-F72F-427F-82DE-D6A505B1DF8F"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:*","matchCriteriaId":"3C2780A0-55EC-488D-9149-EE83BA246A38"}]}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-9r8p-h6cc-6qhm","source":"disclosure@vulncheck.com","tags":["Mitigation","Vendor Advisory"]},{"url":"https://www.vulncheck.com/advisories/n8n-before-credential-exposure-via-jwt-header","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]}]}