{"id":"CVE-2026-72766","state":"PUBLISHED","title":"n8n before 1.123.67 Arbitrary File Read via Send Email Node","description":"n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.32.1 contain a type confusion vulnerability in the Send Email node, which does not enforce that its message fields are strings. A crafted non-string value supplied from a workflow expression into the text or HTML body field can be interpreted by the underlying mail library (Nodemailer) as a file path or URL, allowing arbitrary local file disclosure and server-side request forgery (SSRF). Exploitation requires a pre-existing active workflow with an unauthenticated webhook, valid SMTP credentials configured on the node, and untrusted input mapped directly into the body field; this is not a default configuration.","publishedAt":"2026-08-11T12:17:07.076Z","updatedAt":"2026-10-29T21:16:38.939Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["n8n-io n8n"],"affected":[{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.123.67","versionType":"semver"},{"version":"1.123.67","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.32.0","status":"affected","lessThan":"2.32.1","versionType":"semver"},{"version":"2.32.1","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.0.0-rc.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.31.5","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-2x35-3fw4-9jr4","https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-via-send-email-node"],"weaknesses":["CWE-843"],"ingestedAt":"2026-10-29T23:16:04.497Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72766.json","commit":"dc7676b3f67d6707e4927968546e7e0125ff7ec7","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72766","state":"PUBLISHED","datePublished":"2026-08-11T12:17:07.076Z","dateUpdated":"2026-10-29T21:16:38.939Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-10T15:06:16.417Z"},"containers":{"cna":{"title":"n8n before 1.123.67 Arbitrary File Read via Send Email Node","descriptions":[{"lang":"en","value":"n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.32.1 contain a type confusion vulnerability in the Send Email node, which does not enforce that its message fields are strings. A crafted non-string value supplied from a workflow expression into the text or HTML body field can be interpreted by the underlying mail library (Nodemailer) as a file path or URL, allowing arbitrary local file disclosure and server-side request forgery (SSRF). Exploitation requires a pre-existing active workflow with an unauthenticated webhook, valid SMTP credentials configured on the node, and untrusted input mapped directly into the body field; this is not a default configuration."}],"affected":[{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.123.67","versionType":"semver"},{"version":"1.123.67","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.32.0","status":"affected","lessThan":"2.32.1","versionType":"semver"},{"version":"2.32.1","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.0.0-rc.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.31.5","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-2x35-3fw4-9jr4","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-2x35-3fw4-9jr4)"},{"url":"https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-via-send-email-node","name":"VulnCheck Advisory: n8n before 1.123.67 Arbitrary File Read via Send Email Node","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-843","lang":"en","description":"Access of Resource Using Incompatible Type ('Type Confusion')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-29T21:16:38.939Z"},"datePublic":"2026-07-22T00:00:00.000Z","cpeApplicability":[{"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"}]}]}],"credits":[{"lang":"en","value":"simonkoeck","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-14T19:50:38.898583Z","id":"CVE-2026-72766","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-14T19:50:46.835Z"}}]}}}