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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/n8n-io/n8n/security/advisories/GHSA-x6p3-m6h9-fx7r
Scores
CVSS v3
8.5
EPSS
0.0029
EPSS Percentile
21.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1321
Status
published
Products (3)
n8n/n8n
< 2.24.0
n8n-io/n8n
< 2.24.0
npm/n8n
0 - 2.24.0npm
Published
Jun 23, 2026
Tracked Since
Jun 23, 2026