Description
n8n before 1.123.61, 2.x before 2.27.4, and 2.28.x before 2.28.1 contains a SQL injection vulnerability in the legacy MySQL v1 node's executeQuery operation. The operation substitutes evaluated {{ ... }} expression values directly into the raw SQL string without parameterization. When a workflow uses this operation with expression-sourced values and is connected to an externally-reachable trigger (such as a Webhook node), attacker-controlled input reaching those expressions results in SQL injection, allowing execution of arbitrary SQL with the configured MySQL credentials' privileges. The MySQL v2 node, which uses parameterized queries, is not affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n | n8n | < 1.123.61, 2.28.0 – < 2.28.1, 2.0.0-rc.0 – < 2.27.4 | 1.123.61 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | < 1.123.61 | 1.123.61 | GHSA-hwmj-qg4v-cvg9 |
| npm | n8n | >= 2.28.0, < 2.28.1 | 2.28.1 | GHSA-hwmj-qg4v-cvg9 |
| npm | n8n | >= 2.0.0-rc.0, < 2.27.4 | 2.27.4 | GHSA-hwmj-qg4v-cvg9 |
Advisories 2
- WID-SEC-2026-2067 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 15, 2026
- NCSC-2026-0228 Kwetsbaarheden verholpen in n8n workflow automation platform NCSC-NL (Netherlands) · Jul 13, 2026
References
- GitHub Security Advisory (GHSA-hwmj-qg4v-cvg9) vendor-advisory
- VulnCheck Advisory: n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation third-party-advisory