CVE-2026-103249

HighCVSS 7.6/10Last modified Oct 1, 2026

Description

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a stored DOM cross-site scripting vulnerability in Resource Locator parameter dropdown link handling. Workflow authors can inject malicious script URLs that execute arbitrary JavaScript in the editor origin when other users open the node dropdown and click the external-link icon, with the payload persisting across workflow imports and shares.

Metrics

CVSS 3.1 7.6/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Oct 1, 2026
Last modified
Oct 1, 2026
NVD status
Deferred

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CVE-2026-103249: High severity, CVSS 7.6 | Vulnix