Vulnerability · Published Aug 11, 2026 · Assigned by VulnCheck

CVE-2026-72766n8n before 1.123.67 Arbitrary File Read via Send Email Node

High 8.2

In plain English

A high-severity type confusion in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.2High

Exploit odds (30 days)0.4%top 61.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.67	GHSA-2x35-3fw4-9jr4
npm	n8n	2.32.1	GHSA-2x35-3fw4-9jr4
npm	n8n	2.31.5	GHSA-2x35-3fw4-9jr4

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	0 – before 1.123.67
n8n-io	n8n	2.32.0 – before 2.32.1
n8n-io	n8n	2.0.0-rc.0 – before 2.31.5

Weakness: CWE-843 · 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

References

GitHub Security Advisory (GHSA-2x35-3fw4-9jr4) vendor-advisory
VulnCheck Advisory: n8n before 1.123.67 Arbitrary File Read via Send Email Node third-party-advisory