CVE-2026-110852 n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Workflow Execution via Dynamic-Path Webhook Resolution
Unauthenticated attackers can execute workflows in unrelated projects by omitting the server-generated identifier in webhook requests, leading to unauthorized code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110852?
CVE-2026-110852 is a medium-severity authentication bypass vulnerability in n8n-io n8n, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-288
Which versions are affected by CVE-2026-110852?
How do I fix CVE-2026-110852?
No fix has been published for CVE-2026-110852 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-110852 being exploited?
There is no known exploitation of CVE-2026-110852 in the wild and no public exploit code.
Sources
Also known as GHSA-4c7j-qff5-r9cx, GHSA-g529-fwwh-f6vf.