{"id":"CVE-2026-59208","sourceIdentifier":"security-advisories@github.com","published":"2026-07-09T16:16:46.610","lastModified":"2026-10-25T17:10:00.197","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacker with a valid token from one trusted issuer and a sub matching a victim under another issuer to authenticate as that victim. This issue is fixed in versions 2.27.4 and 2.28.1."},{"lang":"es","value":"n8n es una plataforma de automatización de flujos de trabajo de código abierto. Antes de la 2.27.4 y desde la 2.28.0 antes de la 2.28.1, las instancias de n8n configuradas con más de un emisor de intercambio de tokens de confianza resolvían identidades externas a cuentas locales utilizando solo la declaración sub de JWT e ignoraban la declaración iss, permitiendo a un atacante con un token válido de un emisor de confianza y un sub que coincidiera con una víctima bajo otro emisor autenticarse como esa víctima. Este problema está solucionado en las versiones 2.27.4 y 2.28.1."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"n8n-io","product":"n8n","versions":[{"version":">= 2.28.0, < 2.28.1","status":"affected"},{"version":"< 2.27.4","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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":7.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","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"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":6.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-14T00:19:54.573804Z","id":"CVE-2026-59208","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-287"},{"lang":"en","value":"CWE-346"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-346"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.27.4","matchCriteriaId":"53ADAD49-ACDE-4580-B4BC-AE4DF6D9A560"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.28.0:*:*:*:*:node.js:*:*","matchCriteriaId":"811995CE-011B-4680-892C-3D6DA0008411"}]}]}],"references":[{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579w","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}