CVE-2026-54311

描述

## Impact An authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode. Because the sandbox context was cached and reused across all workflow executions on the instance, prototype mutations introduced by one user's workflow persist into subsequent Merge SQL executions belonging to other users or projects. This allowed a low-privileged attacker to intercept workflow data processed by other users on the same instance. This issue only affects multi-user n8n instances where more than one user has permission to create and execute workflows containing the Merge node in SQL Query mode. ## Patches The issue has been fixed in n8n versions 2.25.7, and 2.26.2. 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: - Limit workflow creation and editing permissions to fully trusted users only. - Disable the Merge node by adding `n8n-nodes-base.merge` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

如何修補 CVE-2026-54311

要修補 CVE-2026-54311,請將受影響套件升級到下列已修補版本。

• —升級至 2.26.2 或更新版本

CVE-2026-54311 正在被利用嗎?

目前沒有被利用訊號。CVE-2026-54311 既不在 CISA KEV 也沒有最新的 EPSS 分數。

受影響套件(1)

• >= 2.26.0, < 2.26.2

CVSS 分數

參考連結(2)

• PATCHgithub.com/n8n-io/n8n
• WEBgithub.com/n8n-io/n8n/security/advisories/GHSA-9c38-2mcm-q7f7