{"id":"CVE-2026-118649","aliases":[],"cve":{"records":[{"id":"CVE-2026-118649","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-28T17:24:54.847Z","published":"2026-10-28T18:59:47.664Z","modified":"2026-10-29T20:54:35.672Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-28T18:59:47.664Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T20:54:35.672Z"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-wvjj-qg37-pv73","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/n8n-before-2.43.5-and-2.44.1-authorization-bypass-via-crafted-workflow-id-in-data-tables","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:*:*:*:*:*:*:*:*","versionStartIncluding":"2.44.0","versionEndExcluding":"2.44.1"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionEndExcluding":"2.43.5"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T15:36:46.048286Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"n8n before 2.43.5 and 2.44.1 Authorization Bypass via Crafted Workflow ID in Data Tables","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"n8n before 2.43.5 and 2.44.x before 2.44.1 accepts a client-supplied workflow ID and caches each workflow's owner project in memory by that ID, so a crafted ID such as __proto__ makes the Data Table project check match every project. An authenticated member who can create and run workflows can list, read, modify, and delete Data Table rows in all projects of the instance.","score":8.7,"severity":"high","published":"2026-10-28T18:59:47.664Z","modified":"2026-10-29T20:54:35.672Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.44.0","status":"affected","lessThan":"2.44.1","versionType":"semver"},{"version":"2.44.1","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-2026-118649"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"2.43.5","versionType":"semver"},{"version":"2.43.5","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-2026-118649"}],"remediation":[],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-wvjj-qg37-pv73","https://www.vulncheck.com/advisories/n8n-before-2.43.5-and-2.44.1-authorization-bypass-via-crafted-workflow-id-in-data-tables"],"sources":[{"name":"CVE","id":"CVE-2026-118649","modified":"2026-10-29T20:54:35.672Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118649"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.7},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","score":8.3}],"sourceAffected":[],"observedAt":"2026-10-29T21:32:41.283Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T06:50:31.295Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T01:55:37.257Z","attemptedAt":"2026-10-30T01:55:37.257Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T01:55:36.675Z","attemptedAt":"2026-10-30T01:55:36.675Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T01:55:39.138Z","attemptedAt":"2026-10-30T01:55:39.138Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-30T01:55:37.032Z","attemptedAt":"2026-10-30T01:55:37.032Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-2rqj-qr72-7wwx","url":"https://github.com/advisories/GHSA-2rqj-qr72-7wwx","modified":"2026-10-28T21:31:25Z","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","checkedAt":"2026-10-30T01:55:36.675Z"},{"source":"FIRST EPSS","id":"CVE-2026-118649","url":"https://www.first.org/epss/","probability":0.0027,"percentile":0.19229,"date":"2026-10-29","checkedAt":"2026-10-30T01:55:37.032Z"},{"source":"NVD","id":"CVE-2026-118649","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118649","modified":"2026-10-29T21:17:16.143","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/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":"2026-10-30T01:55:37.257Z"},{"source":"NVD","id":"CVE-2026-118649","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118649","modified":"2026-10-29T21:17:16.143","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","checkedAt":"2026-10-30T01:55:37.257Z"},{"source":"ENISA EUVD","id":"EUVD-2026-112380","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112380","modified":"Oct 29, 2026, 8:54:35 PM","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","checkedAt":"2026-10-30T01:55:39.138Z"}],"aiSummary":{"text":"n8n versions before 2.43.5 and 2.44.1 have an authorization bypass vulnerability via crafted workflow ID. An authenticated member can access Data Table rows in all projects.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:42:06.286Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-118649"}]}}