{"id":"CVE-2026-72766","revision":null,"records":[{"revision":"8c10fc9a4c8a43c58eade164dee3eea8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72766","aliases":[],"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.","state":0,"publishedAt":"2026-08-11T12:17:07.076+00:00","modifiedAt":"2026-08-14T19:50:46.835+00:00","affected":[{"ecosystem":"Vendor product","name":"n8n","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n8n-io\",\n                    \"product\": \"n8n\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/n8n\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.123.67\"\n                        },\n                        {\n                            \"version\": \"1.123.67\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"n8n","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n8n-io\",\n                    \"product\": \"n8n\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/n8n\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.32.1\"\n                        },\n                        {\n                            \"version\": \"2.32.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"n8n","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n8n-io\",\n                    \"product\": \"n8n\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/n8n\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.31.5\"\n                        },\n                        {\n                            \"version\": \"2.31.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 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","score":8.2,"severity":"HIGH"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72766","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72766","identifiers":["CVE-2026-72766"]},"retained":false,"historicalAffected":[]},{"revision":"12e56ecc2762432e869e207c7c3b7f58","observedAt":"2026-10-25T15:19:03.401+00:00","statement":{"source":"nvd","id":"CVE-2026-72766","aliases":[],"title":"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 …","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.","state":0,"publishedAt":"2026-08-11T13:19:06.807+00:00","modifiedAt":"2026-10-24T15:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","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/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","score":8.2,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"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"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72766","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-843"],"productCriteria":["cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*","cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*","cpe:2.3:a:n8n:n8n:2.32.0:*:*:*:community:node.js:*:*","cpe:2.3:a:n8n:n8n:2.32.0:*:*:*:enterprise:node.js:*:*"],"sourceDates":{"published":"2026-08-11T13:19:06.807","lastModified":"2026-10-24T15:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-72766","identifiers":["CVE-2026-72766"]},"retained":false,"historicalAffected":[]},{"revision":"1b4ce7459a904e60898394e6a1ac99ba","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-2x35-3fw4-9jr4","aliases":["CVE-2026-72766"],"title":"n8n: Send Email Node Arbitrary File Read and SSRF via Nodemailer Content-Object Type Confusion","description":"## Impact\n\nThe n8n Send Email node did not enforce that its message fields were strings, so a crafted untrusted non-string value from a workflow expression could be treated by the underlying mail library as a file path or URL. This could allow disclosure of local files on the n8n host.\n\nExploitation requires a pre-existing active workflow with an unauthenticated webhook, valid SMTP credentials configured on the Send Email node, and untrusted input mapped directly into the text or HTML body field. This is not a default n8n configuration.\n\n## Patches\n\nThe issue has been fixed in n8n versions 1.123.67, 2.31.5, and 2.32.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Audit active workflows for Send Email nodes that map untrusted webhook or external data directly into the text or HTML body fields, and remove or restrict those workflows.\n- Restrict public webhook access at the network or reverse-proxy level to prevent unauthenticated callers from reaching sensitive workflows.\n- Restrict workflow creation and editing permissions to fully trusted users only.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","state":0,"publishedAt":"2026-07-22T22:09:11+00:00","modifiedAt":"2026-08-12T04:26:14.2443096+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.123.67"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.32.0"},{"kind":"fixed","version":"2.32.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0-rc.0"},{"kind":"fixed","version":"2.31.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","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","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-2x35-3fw4-9jr4","https://github.com/n8n-io/n8n/commit/f69dfc6dd2178a14ea1624d2e1d403c2e755042f","https://github.com/n8n-io/n8n","https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.67","https://github.com/n8n-io/n8n/releases/tag/n8n@2.31.5","https://github.com/n8n-io/n8n/releases/tag/n8n@2.32.1"],"sourceUrl":"https://github.com/advisories/GHSA-2x35-3fw4-9jr4","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-2x35-3fw4-9jr4","identifiers":["GHSA-2x35-3fw4-9jr4","CVE-2026-72766"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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