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CVE-2026-110846 Details

ANALYZED

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

Description

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a signature bypass in the waiting-webhook endpoint, which selects Send-and-Wait validation before normalising an alternate node reference form. Attackers holding an execution's resume token can approve waiting executions meant for others, running downstream actions under the workflow owner's credentials, potentially including command execution.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/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-728h-pmr2-7cgh	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.1-send-and-wait-hmac-signature-bypass-via-waiting-webhook	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-180	Incorrect Behavior Order: Validate Before Canonicalize	[email protected]

Affected Products

Product	Versions
n8n	< 2.41.4 (semver) < 2.42.1 (semver)
CPE cpe:2.3:a:n8n:n8n::::::node.js::* Remediation Upgrade: >= 2.41.4moderate effort Upgrade: >= 2.42.1moderate effort Mitigation:low effort Restrict n8n instance access to fully trusted users only. Mitigation:low effort Avoid using Send-and-Wait nodes that gate high-consequence actions in workflows where an earlier public, unauthenticated trigger node exposes a resumeToken to external callers. Mitigation:low effort Restrict or disable public webhook and chat trigger endpoints that precede Send-and-Wait approval nodes until the instance is patched.

Product

Versions

n8n

< 2.41.4 (semver)

< 2.42.1 (semver)

CPE

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

Remediation

Upgrade: >= 2.41.4moderate effort
Upgrade: >= 2.42.1moderate effort
Mitigation:low effort
Restrict n8n instance access to fully trusted users only.
Mitigation:low effort
Avoid using Send-and-Wait nodes that gate high-consequence actions in workflows where an earlier public, unauthenticated trigger node exposes a resumeToken to external callers.
Mitigation:low effort
Restrict or disable public webhook and chat trigger endpoints that precede Send-and-Wait approval nodes until the instance is patched.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 20, 2026	CVE Modified	CISA-ADP
Oct 14, 2026	New CVE Received	[email protected]