PT-2026-56815 · N8N · N8N
CVE-2026-59206
·
Published
2026-07-09
·
Updated
2026-07-22
CVSS v4.0
7.1
High
| Vector | AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N |
Name of the Vulnerable Software and Affected Versions
n8n versions prior to 1.123.61
n8n versions prior to 2.27.4
n8n versions prior to 2.28.1
Description
An authenticated user with
workflow:create permissions can perform prototype pollution by saving, updating, or importing a specially crafted workflow via the workflow API. This allows the attacker to pollute Object.prototype, which can lead to unauthenticated requests being treated as those of a privileged user, thereby exposing endpoints used for listing users and projects.Recommendations
Update to version 1.123.61.
Update to version 2.27.4.
Update to version 2.28.1.
Exploit
Fix
Prototype Pollution
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Weakness Enumeration
Related Identifiers
Affected Products
N8N