n8n before 2.39.6 and 2.40.x before 2.40.1 Approval Bypass via Send and Wait Node
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.
CVE-2026-103260
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103260
n8n
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "n8n-io",
"product": "n8n",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2.39.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "2.40.0",
"lessThan": "2.40.1",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/n8n",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-103260
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #5182 · Revision 1
- Added to Heist Feed
- Publisher date