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CVE-2026-110852 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-4c7j-qff5-r9cx	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-unauthenticated-workflow-execution-via-dynamic-path-webhook-resolution	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-288	Authentication Bypass Using an Alternate Path or Channel	[email protected]

Affected Products

Product	Versions
n8n	< 1.123.83 (semver) < 2.41.4 (semver) < 2.42.1 (semver)
CPE cpe:2.3:a:n8n:n8n::::::node.js::* Remediation Upgrade: >= 1.123.83moderate effort Upgrade: >= 2.42.1moderate effort Upgrade: >= 2.41.4moderate effort Mitigation:low effort Restrict n8n instance access to fully trusted users only. Mitigation:low effort Enable node-level webhook authentication (Basic, Header, or JWT) on all active Webhook nodes that use dynamic path templates. Mitigation:low effort Deactivate workflows using dynamic-path webhooks until the instance is patched. Mitigation:low effort Apply network-level controls to restrict access to the /webhook/, /form/, and /mcp/* routes to trusted sources only.

Product

Versions

n8n

< 1.123.83 (semver)

< 2.41.4 (semver)

< 2.42.1 (semver)

CPE

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*

Remediation

Upgrade: >= 1.123.83moderate effort
Upgrade: >= 2.42.1moderate effort
Upgrade: >= 2.41.4moderate effort
Mitigation:low effort
Restrict n8n instance access to fully trusted users only.
Mitigation:low effort
Enable node-level webhook authentication (Basic, Header, or JWT) on all active Webhook nodes that use dynamic path templates.
Mitigation:low effort
Deactivate workflows using dynamic-path webhooks until the instance is patched.
Mitigation:low effort
Apply network-level controls to restrict access to the /webhook/*, /form/*, and /mcp/* routes to trusted sources only.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 15, 2026	CVE Modified	CISA-ADP
Oct 14, 2026	New CVE Received	[email protected]