cvedb.io
CVE-2026-33665
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-03-25T18:16:32.390 · Last modified 2026-06-17T10:37:53.347

Summary

n8n is an open source workflow automation platform. Prior to versions 2.4.0 and 1.121.0, when LDAP authentication is enabled, n8n automatically linked an LDAP identity to an existing local account if the LDAP email attribute matched the local account's email. An authenticated LDAP user who could control their own LDAP email attribute could set it to match another user's email — including an administrator's — and upon login gain full access to that account. The account linkage persisted even if the LDAP email was later reverted, resulting in a permanent account takeover. LDAP authentication must be configured and active (non-default). The issue has been fixed in n8n versions 2.4.0 and 1.121.0. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgradin

Affected products

n8n — n8n

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.