Overview
Injection vulnerabilities enable attackers to alter the structure of SQL commands by injecting untrusted input into queries. The CVE-2025-15441 describes a WordPress plugin (Form Maker by 10Web) that did not properly prepare SQL queries when the MySQL Mapping feature was used, potentially enabling SQL injection in certain contexts. While that CVE targets a PHP WordPress plugin, the underlying risk is generic: any time untrusted input is embedded into SQL without proper parameterization, an attacker can terminate literals and append malicious SQL. In Go (Gin) applications, similar issues arise when handlers build queries by concatenating user input or otherwise bypass parameter binding. This guide explains how to recognize and fix such patterns in real Go (Gin) code, referencing the CVE to illustrate the real-world motivation for strict query parameterization.
Affected Versions
WordPress Form Maker by 10Web plugin before 1.15.38
Code Fix Example
Go (Gin) API Security Remediation
package main
import (
"database/sql"
"log"
"net/http"
"github.com/gin-gonic/gin"
_ "github.com/go-sql-driver/mysql"
)
type User struct {
ID int `json:"id"`
Name string `json:"name"`
Email string `json:"email"`
}
func main() {
r := gin.Default()
// NOTE: replace with your real DSN
db, err := sql.Open("mysql", "user:pass@tcp(127.0.0.1:3306)/exampledb")
if err != nil {
log.Fatal(err)
}
defer db.Close()
r.GET("/users", func(c *gin.Context) {
name := c.Query("name")
users, err := vulnerableQuery(db, name)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, users)
})
r.GET("/users-fixed", func(c *gin.Context) {
name := c.Query("name")
users, err := safeQuery(db, name)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, users)
})
r.Run(":8080")
}
func vulnerableQuery(db *sql.DB, name string) ([]User, error) {
// Vulnerable pattern: concatenating user input into SQL
query := "SELECT id, name, email FROM users WHERE name = '" + name + "'"
rows, err := db.Query(query)
if err != nil {
return nil, err
}
defer rows.Close()
var users []User
for rows.Next() {
var u User
if err := rows.Scan(&u.ID, &u.Name, &u.Email); err != nil {
return nil, err
}
users = append(users, u)
}
return users, nil
}
func safeQuery(db *sql.DB, name string) ([]User, error) {
// Fixed pattern: parameterized query to prevent injection
query := "SELECT id, name, email FROM users WHERE name = ?"
rows, err := db.Query(query, name)
if err != nil {
return nil, err
}
defer rows.Close()
var users []User
for rows.Next() {
var u User
if err := rows.Scan(&u.ID, &u.Name, &u.Email); err != nil {
return nil, err
}
users = append(users, u)
}
return users, nil
}