CVE-2026-59257CWE-89

n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation

Medium · published July 8, 2026

CVSS v4.0
5.3
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
EPSS
0.00572 · 46.5th percentile
Weakness
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Published
2026-07-08T13:49Z
EPSS history
Timeline
  • 08 JUL 13:49Z
    n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation
    cvelistv5