CVE-2026-54312 | n8n is an open source workflow automation platform. Prior to… | CVSS 7.2 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.

Metadata

CVE ID: CVE-2026-54312
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-12 18:42 UTC
Published: 2026-06-23 15:33 UTC
Last updated: 2026-06-23 16:07 UTC
Primary CWE: CWE-1321
CWE-1321: Improperly Controlled Modification of Object Proto…
Vendor / Product: n8n-io / n8n
Sources: cve.org · NVD

Severity & Metrics

7.2 HIGH CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
n8n-io	n8n	—	< 2.24.0

Weakness (CWE)

CWE	Source	Description
CWE-1321	cna	CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.2	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

References (1)

https://github.com/n8n-io/n8n/security/advisories/GHSA-x6p3-m6h9-fx7r https://github.com/n8n-io/n8n/security/advisories/GHSA-x6p3-m6h9-fx7r