High severity8.8NVD Advisory· Published Jul 8, 2026· Updated Jul 9, 2026
CVE-2026-59257
CVE-2026-59257
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 packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
n8nnpm | < 1.123.61 | 1.123.61 |
n8nnpm | >= 2.28.0, < 2.28.1 | 2.28.1 |
n8nnpm | >= 2.0.0-rc.0, < 2.27.4 | 2.27.4 |
Affected products
1Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-hwmj-qg4v-cvg9ghsaADVISORY
- github.com/n8n-io/n8n/security/advisories/GHSA-hwmj-qg4v-cvg9nvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-59257ghsaADVISORY
- www.vulncheck.com/advisories/n8n-sql-injection-in-mysql-v1-executequery-operation-via-expression-interpolationnvdThird Party AdvisoryWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
News mentions
0No linked articles in our index yet.