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n8n: Send Email Node Arbitrary File Read and SSRF via Nodemailer Content-Object Type Confusion

🗓️ 22 Jul 2026 22:09:11Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 4 Views

Impact The 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 disclos...

Detection
Refs
Vulners
Node
OR
n8nn8nRange2.0.0-rc.0–2.31.5npm
n8nn8nRange2.32.0–2.32.1npm
n8nn8nRange<1.123.67npm

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22 Jul 2026 22:09Current
5.4Medium risk
Vulners AI Score5.4
CWE-200CWE-843CWE-918
4