Overview
CVE-2026-7070 describes a weakness identified in code-projects Inventory Management System 1.0 where an attacker can manipulate the Username argument in the Login flow to trigger a SQL injection. The vulnerability allows remote exploitation and public exploits have been published, enabling attackers to bypass authentication or access restricted data. The CVE aligns with CWE-74 and CWE-89 patterns, illustrating how unvalidated user input can be concatenated into SQL queries and executed by the backend without proper binding. In Go applications using the Gin framework, this class of vulnerability manifests when developers construct SQL statements by string interpolation rather than using parameter binding, exposing the app to arbitrary SQL execution.
In practice, such flaws arise when a login handler reads the username from a request and directly embeds it into a query, e.g., SELECT id FROM users WHERE username = '...'. An attacker can supply crafted input like ' OR '1'='1 to alter the query logic, potentially logging in without valid credentials or extracting user data. This risk is amplified in web services with publicly exposed authentication endpoints and insufficient input validation or privilege controls. The CVE highlights the real-world impact: remote exploitation, potential data leakage, and broader credential-stuffing or lateral movement opportunities if the database is misconfigured.
Remediation focuses on robust input handling and safe database access patterns in Go (Gin). Key mitigations include using parameterized queries or prepared statements, binding user input as parameters, and avoiding direct string concatenation for SQL. Complementary steps include validating inputs, adopting an ORM with bound parameters, applying least-privilege DB credentials, and adding tests and static analysis to catch injection patterns. The guidance below provides Go (Gin)-specific examples that distinguish the vulnerable pattern from the secure pattern and outlines practical steps to harden login endpoints against CWE-89-style attacks.
Affected Versions
Inventory Management System 1.0
Code Fix Example
Go (Gin) API Security Remediation
package main
import (
"database/sql"
"fmt"
"log"
"net/http"
"github.com/gin-gonic/gin"
_ "github.com/mattn/go-sqlite3"
)
var db *sql.DB
func main() {
var err error
db, err = sql.Open("sqlite3", ":memory:")
if err != nil { log.Fatal(err) }
initDB()
r := gin.Default()
r.GET(`/login/vuln`, vulnerableLogin)
r.GET(`/login/fix`, fixedLogin)
http.ListenAndServe(":8080", r)
}
func initDB() {
if _, err := db.Exec(`CREATE TABLE users (id INTEGER PRIMARY KEY, username TEXT);`); err != nil { log.Fatal(err) }
if _, err := db.Exec(`INSERT INTO users (username) VALUES ('alice'), ('bob');`); err != nil { log.Fatal(err) }
}
type LoginRequest struct {
Username string `json:"username" binding:"required"`
}
func vulnerableLogin(c *gin.Context) {
username := c.Query("username")
// Vulnerable: direct string interpolation can lead to SQL injection
query := fmt.Sprintf(`SELECT id FROM users WHERE username = '%s'`, username)
var id int
if err := db.QueryRow(query).Scan(&id); err != nil {
c.Status(401)
return
}
c.JSON(200, gin.H{"user_id": id})
}
func fixedLogin(c *gin.Context) {
username := c.Query("username")
var id int
// Safe: parameterized query prevents injection
if err := db.QueryRow(`SELECT id FROM users WHERE username = ?`, username).Scan(&id); err != nil {
c.Status(401)
return
}
c.JSON(200, gin.H{"user_id": id})
}