Overview
CVE-2026-7226 describes a SQL injection vulnerability impacting SourceCodester Pizzafy Ecommerce System 1.0, where the login2 path (/admin/ajax.php?action=login2) could be exploited by manipulating the e-mail parameter. The vulnerability is a classic CWE-74/CWE-89 case: unsafely constructed SQL in which user input is embedded directly into a query string, enabling attackers to alter query logic or retrieve data remotely. Public disclosure means attackers may exploit it in the wild.
In Go with Gin, this class of vulnerability mirrors the same failure pattern: building SQL by string concatenation or interpolating user input without parameterization. If an app composes queries or calls an API in a way that untrusted input is treated as code, an attacker can inject SQL fragments via crafted values such as email or username.
Fixes in Go (Gin) involve adopting parameterized queries, strong input handling, and least-privilege DB access. Use database/sql with placeholders or an ORM that binds parameters, never concatenate inputs into SQL; validate and sanitize inputs; hash passwords and compare hashed values; ensure error messages do not reveal sensitive information; audit all SQL paths. The Go-based remediation should align with the CVE context by preventing the same injection flaw in any similar login flow implemented in Gin.
The provided code sample contrasts a vulnerable function and a fixed function in a Gin app; it shows how to switch from string concatenation to a parameterized query, and outlines additional hardening steps.
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"
)
var db *sql.DB
func loginVulnerable(c *gin.Context) {
email := c.PostForm("email")
password := c.PostForm("password")
// Vulnerable: direct string concatenation of user input into SQL (CVE-2026-7226 reference)
query := "SELECT id FROM users WHERE email = '" + email + "' AND password = '" + password + "'"
var id int
err := db.QueryRow(query).Scan(&id)
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid credentials"})
return
}
c.JSON(http.StatusOK, gin.H{"id": id})
}
func loginFixed(c *gin.Context) {
email := c.PostForm("email")
password := c.PostForm("password")
// Fixed: parameterized query to prevent SQL injection
query := "SELECT id FROM users WHERE email = ? AND password = ?"
var id int
err := db.QueryRow(query, email, password).Scan(&id)
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid credentials"})
return
}
c.JSON(http.StatusOK, gin.H{"id": id})
}
func main() {
// Database initialization omitted for brevity; use proper DSN and error handling
// Example: db, err := sql.Open("mysql", "user:pass@tcp(127.0.0.1:3306)/dbname")
r := gin.Default()
r.POST("/login/vulnerable", loginVulnerable)
r.POST("/login/fixed", loginFixed)
if err := r.Run(":8080"); err != nil {
log.Fatal(err)
}
}