{"id":"CVE-2026-72769","aliases":[],"cve":{"records":[{"id":"CVE-2026-72769","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-10T15:06:16.417Z","published":"2026-08-11T12:17:09.195Z","modified":"2026-10-29T21:16:42.627Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-29T21:16:42.627Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-08-11T14:02:48.975Z"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vh","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engine","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-1321","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.123.67"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.32.1","versionStartIncluding":"2.32.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.31.5","versionStartIncluding":"2.0.0-rc.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-08-11T14:02:42.534015Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"n8n before 1.123.67 Prototype Pollution via VM Expression Engine","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.","score":6.1,"severity":"medium","published":"2026-08-11T12:17:09.195Z","modified":"2026-10-29T21:16:42.627Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.123.67","versionType":"semver"},{"version":"1.123.67","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-72769"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.32.0","status":"affected","lessThan":"2.32.1","versionType":"semver"},{"version":"2.32.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-72769"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.0.0-rc.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.31.5","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-72769"}],"remediation":[],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vh","https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engine"],"sources":[{"name":"CVE","id":"CVE-2026-72769","modified":"2026-10-29T21:16:42.627Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-72769"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","score":6.1}],"sourceAffected":[],"observedAt":"2026-10-29T21:37:16.084Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T09:35:34.504Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T22:15:38.952Z","attemptedAt":"2026-10-29T22:15:38.952Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T22:15:40.040Z","attemptedAt":"2026-10-29T22:15:40.040Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T22:15:40.040Z","attemptedAt":"2026-10-29T22:15:40.040Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T22:15:38.783Z","attemptedAt":"2026-10-29T22:15:38.783Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-72769","url":"https://www.first.org/epss/","probability":0.00514,"percentile":0.43702,"date":"2026-10-29","checkedAt":"2026-10-29T22:15:38.783Z"},{"source":"NVD","id":"CVE-2026-72769","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72769","modified":"2026-10-29T20:17:34.837","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/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","checkedAt":"2026-10-29T22:15:38.952Z"},{"source":"NVD","id":"CVE-2026-72769","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72769","modified":"2026-10-29T20:17:34.837","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","checkedAt":"2026-10-29T22:15:38.952Z"},{"source":"ENISA EUVD","id":"EUVD-2026-56095","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-56095","modified":"Oct 29, 2026, 9:16:42 PM","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","checkedAt":"2026-10-29T22:15:40.040Z"},{"source":"GitHub Advisory Database","id":"GHSA-83p6-2p5w-42rc","url":"https://github.com/advisories/GHSA-83p6-2p5w-42rc","modified":"2026-09-18T21:32:43Z","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","checkedAt":"2026-10-29T22:15:40.040Z"}],"aiSummary":{"text":"n8n versions before 1.123.67, 2.31.5, and 2.32.1 contain a prototype pollution vulnerability in the VM expression engine, allowing an authenticated user to create or edit a workflow expression and potentially cause a denial of service. The vulnerability affects both self-hosted and cloud instances. An attacker needs access to create or edit workflow expressions.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:30:18.591Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-72769"}]}}