Incorrect authorization in n8n - CVE-2026-110852
Published: November 9, 2026 / Updated: November 10, 2026
Vulnerability identifier: #VU163088
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-110852
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated attacker to execute workflows in unrelated n8n projects under those projects' credentials.
The vulnerability exists due to path-only matching in n8n's shared webhook, form, and MCP resolver when resolving dynamic-path endpoints. An unauthenticated attacker can omit the unguessable server-generated identifier from a request URL and still trigger the target workflow if node-level authentication is absent or its requirements are satisfied.
Affected software
n8n
How to mitigate CVE-2026-110852
Install security update from vendor's website.
n8n - addressed in versions 1.123.83, 2.41.4, 2.42.1