{"id":"CVE-2026-85170","title":"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","summary":"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 res…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-20"],"vendor":"n8n","product":"n8n","affected":["n8n < 1.123.73","n8n >= 2.0.0, < 2.35.4","n8n >= 2.36.0, < 2.36.2"],"patched":["n8n 2.36.2"],"published":"2026-09-03","updated":"2026-09-18","sourceUpdated":"2026-09-18T14:42:49.993","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85170","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-95ph-833c-4wrp","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.73-local-file-read-and-ssrf-via-gmail-and-brevo-nodes","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00232,"epssPercentile":0.14375,"ingestedAt":"2026-09-08T21:11:12.290Z","slug":"CVE-2026-85170","body":"## Overview\n\nn8n 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.\n\n## Affected\n\n- `n8n < 1.123.73`\n- `n8n >= 2.0.0, < 2.35.4`\n- `n8n >= 2.36.0, < 2.36.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `n8n 2.36.2`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":206884,"id":"CVE-2026-85170","ts":1789746306907,"field":"cvss","old":null,"new":"6.5"},{"seq":206883,"id":"CVE-2026-85170","ts":1789746306907,"field":"severity","old":"none","new":"medium"}]}