[ CVE-2026-103260 · Published 1 Oct 2026 ]
Vulnerability in n8n-io n8n
CVSS 4.0
EPSS <1%No fix listed yet
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.