CVE-2025-7471: Modern Bag SQL Injection Vulnerability

CVE-2025-7471 Overview

CVE-2025-7471 is a SQL injection vulnerability in code-projects Modern Bag 1.0. The flaw resides in the /admin/login-back.php script, where the user-name parameter is passed to a database query without proper sanitization. Attackers can manipulate this argument to inject arbitrary SQL statements. The vulnerability is exploitable remotely without authentication, and the exploit details have been disclosed publicly. The issue is tracked under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output).

Critical Impact

Unauthenticated remote attackers can inject SQL through the admin login page, potentially compromising backend database confidentiality, integrity, and availability.

Affected Products

• code-projects Modern Bag 1.0
• Affected component: /admin/login-back.php
• Vulnerable parameter: user-name

Discovery Timeline

• 2025-07-12 - CVE-2025-7471 published to NVD
• 2026-04-29 - Last updated in NVD database

Technical Details for CVE-2025-7471

Vulnerability Analysis

The vulnerability exists in the administrative login backend of code-projects Modern Bag 1.0. The script /admin/login-back.php accepts a user-name parameter from client input and incorporates it directly into a SQL query. Because the application does not validate, sanitize, or parameterize this input, attackers can break out of the intended query context and append arbitrary SQL clauses.

Successful exploitation can allow attackers to bypass authentication on the admin panel, enumerate database records, or extract credentials. The attack requires no privileges and no user interaction, and the attack surface is reachable over the network. Public disclosure of exploitation details increases the likelihood of opportunistic scanning and weaponization.

Root Cause

The root cause is improper neutralization of special characters in the user-name POST parameter before it is concatenated into a SQL statement. The application fails to use prepared statements or parameterized queries, mapping to [CWE-89]. Input handling also lacks server-side allow-list validation, which would constrain accepted characters and reject SQL metacharacters.

Attack Vector

An unauthenticated remote attacker sends a crafted HTTP POST request to /admin/login-back.php with a malicious payload in the user-name field. Typical payloads use single-quote terminators followed by boolean, UNION, or time-based SQL constructs to bypass authentication or exfiltrate data. The vulnerability is exploitable from any network position with HTTP access to the admin endpoint. See the public GitHub disclosure and VulDB entry #316123 for additional technical context.

No verified proof-of-concept code is reproduced here. Refer to the GitHub CVE Issue #4 for disclosed exploitation details.

Detection Methods for CVE-2025-7471

Indicators of Compromise

• HTTP POST requests to /admin/login-back.php containing SQL metacharacters such as single quotes, --, UNION SELECT, or OR 1=1 in the user-name field.
• Unexpected admin authentication successes from unfamiliar source IPs.
• Database error messages or anomalous query response times originating from the login backend.

Detection Strategies

• Inspect web server access logs for POST requests to /admin/login-back.php with encoded SQL syntax in form parameters.
• Deploy web application firewall (WAF) rules that flag SQL injection patterns targeting the user-name parameter.
• Correlate failed login spikes against the admin endpoint with subsequent privileged actions on the database.

Monitoring Recommendations

• Enable database query logging and alert on UNION-based or boolean-based query patterns originating from the application user.
• Monitor outbound traffic from the database server for unusual data egress that may indicate exfiltration.
• Track new or modified admin accounts and session tokens within the Modern Bag application.

How to Mitigate CVE-2025-7471

Immediate Actions Required

• Restrict network access to the /admin/ directory using IP allow-listing or VPN-only access until a fix is applied.
• Deploy WAF signatures that block SQL injection payloads targeting the user-name parameter.
• Audit the database for unauthorized accounts, modified records, or evidence of prior exploitation.

Patch Information

No vendor advisory or official patch has been published for code-projects Modern Bag 1.0 at the time of this writing. Refer to the code-projects website and the VulDB entry for updates. Organizations using this application should consider replacing it or applying source-level fixes to enforce parameterized queries in /admin/login-back.php.

Workarounds

• Modify /admin/login-back.php to use prepared statements with bound parameters for the user-name and password fields.
• Apply server-side input validation that restricts the user-name field to an allow-list of alphanumeric characters.
• Run the database service with a least-privilege account that cannot read sensitive tables outside the application scope.
• Disable or remove the administrative login endpoint if it is not actively required in production.