CVE-2026-110846n8n before 2.41.4 and 2.42.1 Send-and-Wait HMAC Signature Bypass via Waiting-Webhook
Updated under an hour ago ()
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It affects n8n-io n8n. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.51%, higher than 42% of scored CVEs.
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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.
- CVSS
- 7.0 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N
- Weakness (CWE)
- CWE-180
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.51% (percentile 42)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
n8n-io n8n n8n_io:n8n (from the name) | before 2.41.4; from 2.42.0 before 2.42.1 | CNA record |
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-728h-pmr2-7cghvendor-advisory
- https://www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.1-send-and-wait-hmac-signature-bypass-via-waiting-webhookthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.