Description
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an approval bypass vulnerability in the Send and Wait node's Approve Within Chat mode. Attackers can submit resume requests without verification of the requester's identity or approval permissions, allowing unauthenticated users to advance waiting executions and trigger guarded actions.
Published: 2026-10-01
Score: 6.3 Medium
EPSS: n/a
KEV: No
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Thu, 01 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
Description n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an approval bypass vulnerability in the Send and Wait node's Approve Within Chat mode. Attackers can submit resume requests without verification of the requester's identity or approval permissions, allowing unauthenticated users to advance waiting executions and trigger guarded actions.
Title n8n before 2.39.6 and 2.40.x before 2.40.1 Approval Bypass via Send and Wait Node
First Time appeared N8n
N8n n8n
Weaknesses CWE-862
CPEs cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Vendors & Products N8n
N8n n8n
References
Metrics cvssV3_1

{'score': 4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N'}

Subscriptions

N8n N8n
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-01T10:42:03.543Z

Reserved: 2026-09-30T10:55:39.869Z

Link: CVE-2026-103260

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-01T11:17:20.660

Modified: 2026-10-01T11:17:20.793

Link: CVE-2026-103260

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses