n8n before 2.41.4 and 2.42.1 Send-and-Wait HMAC Signature Bypass via Waiting-Webhook
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.
CVE-2026-110846
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-2026-110846
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": "2.41.4",
"versionType": "semver"
},
{
"status": "affected",
"version": "2.42.0",
"lessThan": "2.42.1",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/n8n",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-110846
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #42081 · Revision 1
- Added to Heist Feed
- Publisher date