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CVE-2026-42227

CVE-2026-42227 · n8n: Public API Variables IDOR Allows Cross-Project Secret Disclosure

This page contains facts from public vulnerability sources. Check the original advisory before updating.

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with a valid API key scoped to variable:list could read variables from projects they are not a member of by supplying an arbitrary projectId query parameter to the public API variables endpoint. The handler queried the variables repository directly without enforcing project membership checks, bypassing the authorization-aware service layer used by the internal enterprise controller. If variables were misused to store sensitive information such as credentials or tokens, they should be rotated immediately. This issue only affects licensed enterprise or team deployments with multiple projects and the variables feature enabled. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

CVSS 6.0 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • n8n

    Versions
    • < 1.123.32: Affected
    • >= 2.17.0, < 2.17.4: Affected
    • >= 2.18.0, < 2.18.1: Affected

    No fix published

  • n8n npm

    Affected ranges
    • SEMVER: < 1.123.32

    Update to 1.123.32

  • n8n npm

    Affected ranges
    • SEMVER: ≥ 2.18.0, < 2.18.1

    Update to 2.18.1

  • n8n npm

    Affected ranges
    • SEMVER: ≥ 2.0.0, < 2.17.4

    Update to 2.17.4

Original sources

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