CVE-2026-21858 — n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution…
Published: 2026-01-07 · CVSS: 10.0 · CVSS 3.1
n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker, resulting in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage. This issue is fixed in version 1.121.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7