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CVE-2026-54306

CVE-2026-54306 · n8n: Prototype Pollution enables confused-deputy execution via public webhooks

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

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copying. These fields could be surfaced and consumed as normal values by downstream built-in nodes. Where a workflow combines a public webhook with action nodes that consume the resulting fields, an attacker could cause the workflow to act as a confused deputy — targeting unintended records or issuing outbound requests using the workflow owner's configured credentials. This vulnerability is fixed in 2.25.7 and 2.26.2.

CVSS 6.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • n8n

    Versions
    • >= 2.26.0, < 2.26.2: Affected
    • < 2.25.7: Affected

    No fix published

  • n8n npm

    Affected ranges
    • SEMVER: ≥ 2.26.0, < 2.26.2

    Update to 2.26.2

  • n8n npm

    Affected ranges
    • SEMVER: < 2.25.7

    Update to 2.25.7

Original sources

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