{"id":"CVE-2026-72749","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-08-11T13:19:05.960","lastModified":"2026-10-24T15:10:00.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted."},{"lang":"es","value":"n8n antes de 1.123.67, 2.31.5 y 2.32.1 contiene una vulnerabilidad de contaminación de prototipos en el nodo Edit Fields (Set). El nodo asigna campos de salida a través de un asignador de ruta de notación de puntos sin restringir el nombre del campo, permitiendo a un usuario autenticado nombrar un campo siguiendo una ruta de método incorporado heredado y corromper una variable global compartida en el proceso principal de Node.js. Debido a que esa variable global se utiliza en la ruta de autenticación de solicitudes, la instancia falla entonces cada solicitud autenticada, causando una denegación de servicio a nivel de instancia para todos los usuarios hasta que se reinicie el proceso."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"1.123.67","versionType":"semver","status":"affected"},{"version":"1.123.67","versionType":"semver","status":"unaffected"}]},{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"2.32.1","versionType":"semver","status":"affected"},{"version":"2.32.1","versionType":"semver","status":"unaffected"}]},{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"2.31.5","versionType":"semver","status":"affected"},{"version":"2.31.5","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:N/PR:L/UI:N/VC:N/VI:N/VA:H/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":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","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:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-11T17:41:04.589878Z","id":"CVE-2026-72749","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-1321"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.123.67","matchCriteriaId":"4CBABC9C-8053-4556-99DF-B6A7BB96DFC0"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionStartIncluding":"2.31.0","versionEndExcluding":"2.31.5","matchCriteriaId":"9834D769-4344-496B-8E27-78FC32EA8E76"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.32.0:*:*:*:*:node.js:*:*","matchCriteriaId":"4AC4E002-974B-4748-A5CB-F8A40E4F3B24"}]}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8","source":"disclosure@vulncheck.com","tags":["Mitigation","Vendor Advisory"]},{"url":"https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-edit-fields","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]}]}