CVE-2026-54312
High
Description
n8n is an open source workflow automation platform. Prior to 2.24.0, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via the Microsoft SQL node by supplying a crafted value as the table parameter. This pollutes Object.prototype process-wide for the lifetime of the n8n server process, causing application-wide validation failures and rendering the n8n instance completely non-functional until restarted. This vulnerability is fixed in 2.24.0.
SeverityHigh
CVSS8.5
Exploit probability—
Product
N8n
PublishedJun 23, 2026
First seenJun 23, 2026
Weakness typeCWE-1321Prototype pollution
How to fix
Update
- n8n n8n2.24.0 or later
- n8n2.24.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| n8n n8n | v < 2.24.0 | 2.24.0 |
| n8nnpm | v < 2.24.0 | 2.24.0 |
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