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CVE-2026-42226

CVE-2026-42226 · n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay

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 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.

CVSS 7.1 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • n8n

    Versions
    • < 1.123.33: Affected
    • >= 2.17.0, < 2.17.5: Affected

    No fix published

  • n8n npm

    Affected ranges
    • SEMVER: ≥ 2.17.0, < 2.17.5

    Update to 2.17.5

  • n8n npm

    Affected ranges
    • SEMVER: < 1.123.33

    Update to 1.123.33

Original sources

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