{"id":"CVE-2026-56353","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-07-15T12:18:02.580","lastModified":"2026-10-24T22:10:00.210","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"n8n contains an authentication bypass in the Chat Trigger node when configured with n8n User Auth (a non-default configuration). In affected releases — before 1.123.22, the 2.0.0 through 2.9.2 line, and 2.10.0 — the authentication check on the Chat Trigger webhook endpoint can be circumvented, allowing access without valid credentials. Fixed in 1.123.22, 2.9.3, and 2.10.1."},{"lang":"es","value":"n8n contiene una omisión de autenticación en el nodo Chat Trigger cuando se configura con n8n User Auth (una configuración no predeterminada). En las versiones afectadas - antes de la 1.123.22, la línea 2.0.0 a 2.9.2, y la 2.10.0 - la verificación de autenticación en el endpoint de webhook de Chat Trigger puede ser eludida, permitiendo el acceso sin credenciales válidas. Corregido en 1.123.22, 2.9.3, y 2.10.1."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"n8n","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"1.123.22","versionType":"semver","status":"affected"},{"version":"1.123.22","versionType":"semver","status":"unaffected"},{"version":"2.0.0","lessThan":"2.9.3","versionType":"semver","status":"affected"},{"version":"2.9.3","versionType":"semver","status":"unaffected"},{"version":"2.10.0","lessThan":"2.10.1","versionType":"semver","status":"affected"},{"version":"2.10.1","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:N/UI:N/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":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","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"}}],"cvssMetricV31":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-16T15:13:06.303735Z","id":"CVE-2026-56353","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-287"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.123.22","matchCriteriaId":"77E36F68-2FDD-4771-B2DD-3F0A168E92E1"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.9.3","matchCriteriaId":"CDB18D4D-1D4C-422A-BE3E-0FF8FC9DDD82"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.10.0:*:*:*:community:node.js:*:*","matchCriteriaId":"B665A0E7-0DC8-4B25-9D16-BA3B2CBFB12C"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.10.0:*:*:*:enterprise:node.js:*:*","matchCriteriaId":"B30DD229-9AF2-4E3D-B1BC-C6014B510ADE"}]}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-jh8h-6c9q-7gmw","source":"disclosure@vulncheck.com","tags":["Vendor Advisory"]},{"url":"https://www.vulncheck.com/advisories/n8n-authentication-bypass-in-chat-trigger-node","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]}]}