CVE-2026-110852

Medium

Description

n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains an authentication bypass because dynamic-path webhook resolution matched requests on the path alone, ignoring the server-generated identifier that is the URL's only unguessable component. Unauthenticated attackers can omit this identifier in requests to webhook, form, or MCP routes to execute workflows in unrelated projects under those projects' credentials.

SeverityMedium

CVSS6.3

Exploit probability—

ProductN8n

PublishedOct 14, 2026

First seenOct 14, 2026

Weakness typeCWE-288CWE-288

How to fix

Update

n8n-io n8n1.123.83, 2.41.4, 2.42.1 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-4c7j-qff5-r9cx

Affected products

Product	Affected versions	Fixed in
n8n-io n8n	v < 1.123.83, 2.0.0 ≤ v < 2.41.4, 2.42.0 ≤ v < 2.42.1	1.123.83, 2.41.4, 2.42.1

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