| Component | n8n |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-09-03 |
| Last modified | 2026-09-18 |
| Affected versions | n8n < 1.123.73 n8n >= 2.0.0, < 2.35.4 n8n >= 2.36.0, < 2.36.2 |
| Fixed in | 1.123.73, 2.35.4, 2.36.2 |
| Weakness | CWE-20 |
| CISA KEV | not listed |
NVD description
n8n versions before 1.123.73, 2.35.4, and 2.36.2 pass message content in the Gmail (v1) and Brevo nodes to the mail composer without verifying it is a string. An authenticated user able to run a workflow can supply an expression that resolves to an object carrying a path or href property, causing the composer to read a local file accessible to the n8n process or fetch an internal URL (SSRF) and attach the result to the outgoing message.
What to do
- Upgrade n8n to
1.123.73or later (or the patched release of your branch: 2.35.4, 2.36.2). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-85170
- https://github.com/n8n-io/n8n/security/advisories/GHSA-95ph-833c-4wrp
- https://www.vulncheck.com/advisories/n8n-before-1.123.73-local-file-read-and-ssrf-via-gmail-and-brevo-nodes
Read more
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