Skip to content
CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-103256

n8n before 2.39.6 and 2.40.x before 2.40.1 Credentials Leak via preAuthentication Hook

Description

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain a credentials leak vulnerability in the Wekan and Baserow username-and-password credentials that sends unencrypted passwords to unvalidated hosts. Attackers with credential update permissions can modify the host field to receive account passwords at arbitrary hosts, bypassing domain validation controls.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n8n-io n8n

Default version status: unaffected

  • 0 to < 2.39.6affected
  • 2.40.0 to < 2.40.1affected
pkg:npm/n8n

References