CVE-2026-33665

描述

## Impact 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). ## Patches 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. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Disable LDAP authentication until the instance can be upgraded. - Restrict LDAP directory permissions so that users cannot modify their own email attributes. - Audit existing LDAP-linked accounts for unexpected account associations. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

如何修補 CVE-2026-33665

要修補 CVE-2026-33665,請將受影響套件升級到下列已修補版本。

• —升級至 2.4.0 或更新版本

CVE-2026-33665 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 2.0.0-rc.0, < 2.4.0

CVSS 分數