| Component | n8n |
| Severity | high (CVSS 7.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-08-11 |
| Last modified | 2026-08-28 |
| Affected versions | n8n < 1.123.67 n8n < 1.123.67 n8n >= 2.0.0, < 2.31.5 n8n >= 2.0.0, < 2.31.5 n8n = 2.32.0 n8n = 2.32.0 |
| Fixed in | 1.123.67, 2.31.5 |
| Weakness | CWE-843 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade n8n to
1.123.67or later (or the patched release of your branch: 2.31.5). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-72766
- 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
Read more
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