CVE-2026-85170

n8n before 1.123.73 Local File Read and SSRF via Gmail and Brevo nodes

State: Published
Severity: 7.1 High
Published: Sep 3, 2026
Updated: Oct 29, 2026
Reserved: Sep 3, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N	VulnCheck

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
n8nn8n-io	before 1.123.73Affected 1.123.73Not affected
n8nn8n-io	2.36.0 to before 2.36.2Affected 2.36.2Not affected
n8nn8n-io	2.0.0-rc.0 to before 2.35.4Affected 2.35.4Not affected

References

GitHub Security Advisory (GHSA-95ph-833c-4wrp)vendor-advisory
VulnCheck Advisory: n8n before 1.123.73 Local File Read and SSRF via Gmail and Brevo nodesthird-party-advisory

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