CVEvulnerability

CVE-2026-85170

7.1 HIGH Published 2026-09-03 Modified 2026-09-18 Official page ↗
Status
Analyzed
Published
2026-09-03
Last modified
2026-09-18
Assigner
[email protected]
CVSS 4.0 ([email protected])
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-20

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.

Affected configurations

• n8n n8n (< 1.123.73) • n8n n8n (>= 2.0.0 < 2.35.4) • n8n n8n (>= 2.36.0 < 2.36.2)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References