CVE-2026-110840

n8n before 2.41.4 and 2.42.1 SQL Injection via Microsoft SQL Node Query Field

State: Published
Severity: 7.0 High
Published: Oct 14, 2026
Updated: Oct 15, 2026
Reserved: Oct 14, 2026

Description

n8n before 2.41.4 and 2.42.x before 2.42.1 contains an SQL injection vulnerability in version 1 of the Microsoft SQL node, which substitutes Query field expression values directly into SQL text without parameterisation. When a workflow binds untrusted input such as webhook fields to the Query field, unauthenticated external callers can execute arbitrary SQL against the connected database with the stored credential's privileges.

Scores

CVSS	Score	Vector	Source
4.0	7.0 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:L	VulnCheck

Weaknesses

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Affected Products

Product	Versions
n8nn8n-io	before 2.41.4Affected 2.42.0 to before 2.42.1Affected

References

GitHub Security Advisory (GHSA-5qpp-pqww-h7fp)vendor-advisory
VulnCheck Advisory: n8n before 2.41.4 and 2.42.1 SQL Injection via Microsoft SQL Node Query Fieldthird-party-advisory

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