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.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Thu, 03 Sep 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | n8n before 1.123.73 Local File Read and SSRF via Gmail and Brevo nodes | |
| First Time appeared |
N8n
N8n n8n |
|
| Weaknesses | CWE-20 | |
| CPEs | cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:* | |
| Vendors & Products |
N8n
N8n n8n |
|
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-09-03T12:13:46.344Z
Reserved: 2026-09-03T11:05:09.078Z
Link: CVE-2026-85170
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses