Description


n8n before 2.41.4 and 2.42.x before 2.42.1 contains a prototype pollution vulnerability that allows low-privileged users to alter built-in object behaviour by saving workflows with specially named connection keys. Attackers can add keys such as __proto__ to workflow connections, which the periodic history compaction task processes, causing logins and writes to fail with server errors.

Related CPE's


Could not find any relations

Weaknesses



CWE-1321

CVSS impact metrics


CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

7.1 · High

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-28T19:17:33.957Z

2 hours ago

Last modified

2026-10-28T19:17:34.077Z

2 hours ago