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CVE-2026-118648

CVE-2026-118648 · n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses Missing Sandbox Policy

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

n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy. Authenticated members who can create and activate workflows can serve HTML that runs on the n8n origin, letting scripts act with the session of users who open the webhook URL.

CVSS 8.4 · High · EPSS 0.3% · Fix available

Published
Updated

Affected products and versions

  • n8n

    Versions
    • ≥ 0, < 1.123.85: Affected (semver)
    • 1.123.85: Not affected (semver)

    Update to 1.123.85

  • n8n

    Versions
    • ≥ 2.44.0, < 2.44.1: Affected (semver)
    • 2.44.1: Not affected (semver)

    Update to 2.44.1

  • n8n

    Versions
    • ≥ 2.0.0, < 2.43.5: Affected (semver)
    • 2.43.5: Not affected (semver)

    Update to 2.43.5

Original sources

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