CVE WatchOct 1, 2026

CVE-2026-103260

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

CVSS

4.0

Medium

EPSS

0.3%

p20

KEV

—

Exploit Today

0-100

Published: Oct 1, 2026 · Last modified: Oct 1, 2026 · CWE-862

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-10-022026-10-25

Technical 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.

Official references

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