CVE-2025-11359: Simple Banking System SQLi Vulnerability

CVE-2025-11359 Overview

CVE-2025-11359 is a SQL injection vulnerability in code-projects Simple Banking System 1.0. The flaw resides in the /transfermoney.php script, where the ID argument is passed to a database query without proper sanitization. Attackers can manipulate this parameter to inject arbitrary SQL statements against the backend database. The vulnerability requires network access and low-privileged authentication, but no user interaction. A public exploit disclosure exists, which increases the likelihood of opportunistic abuse against exposed installations. The issue is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Authenticated remote attackers can inject SQL through the ID parameter of /transfermoney.php, potentially exposing or modifying banking transaction data.

Affected Products

code-projects Simple Banking System 1.0
Vendor component: codeastro:simple_banking_system
CPE: cpe:2.3:a:codeastro:simple_banking_system:1.0:*:*:*:*:*:*:*

Discovery Timeline

2025-10-07 - CVE-2025-11359 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2025-11359

Vulnerability Analysis

The vulnerability exists in the /transfermoney.php endpoint of Simple Banking System 1.0. The script accepts an ID parameter from the HTTP request and concatenates it directly into a SQL query without parameterized binding or input validation. This allows an authenticated attacker to alter query logic by supplying crafted SQL syntax in the ID value.

Because the affected endpoint handles money transfer operations, successful exploitation can disclose account identifiers, balances, and transaction history. An attacker may also modify rows linked to the transfer workflow, depending on the surrounding query structure. The application is distributed as open-source educational software, so deployments are typically small but the source code is widely available for adversary review.

The Common Weakness Enumeration mapping is [CWE-74], covering improper neutralization of special elements passed to downstream interpreters. The public proof-of-concept reference is hosted at GitHub Issue ceeeeb-hao/cve#1 and documented in VulDB entry #327246.

Root Cause

The root cause is the absence of prepared statements or input sanitization when handling the ID parameter in /transfermoney.php. User-controlled input flows directly into a SQL statement, allowing query structure manipulation.

Attack Vector

The attack is remote and requires a valid low-privileged session in the application. An attacker sends a crafted HTTP request to /transfermoney.php with a malicious payload in the ID parameter. The injected SQL is then executed by the backend database in the context of the application user.

No verified exploit code is republished here. Refer to the VulDB CTI #327246 and the linked GitHub issue for the disclosed proof-of-concept details.

Detection Methods for CVE-2025-11359

Indicators of Compromise

HTTP requests to /transfermoney.php containing SQL meta-characters such as ', ", --, UNION, or SLEEP( in the ID parameter.
Database error messages referencing transfermoney.php in web server or PHP error logs.
Unexpected modifications to transfer-related tables outside normal application workflows.

Detection Strategies

Inspect web access logs for unusual query strings or POST bodies targeting /transfermoney.php with non-numeric ID values.
Deploy web application firewall (WAF) rules that flag SQL injection patterns against the banking application endpoints.
Correlate authentication events with database query anomalies to identify abuse of low-privileged accounts.

Monitoring Recommendations

Enable verbose query logging on the MySQL or MariaDB backend during incident response to capture injected statements.
Monitor for spikes in 500-series HTTP responses from /transfermoney.php, which often accompany failed injection attempts.
Alert on outbound database connections initiated from the PHP process to unexpected destinations.

How to Mitigate CVE-2025-11359

Immediate Actions Required

Restrict network access to the Simple Banking System 1.0 application until a vendor fix is available.
Audit user accounts and revoke unnecessary low-privileged access that could be abused for exploitation.
Review database logs for evidence of prior injection attempts against /transfermoney.php.

Patch Information

No vendor patch has been published in the referenced advisories. Operators should monitor the code-projects website and the VulDB submission record for updates. Until a fix is released, consider removing the application from production environments.

Workarounds

Place the application behind a WAF with SQL injection signatures tuned for PHP applications.
Modify /transfermoney.php to use prepared statements with parameter binding for the ID argument.
Enforce strict server-side validation that rejects non-integer values for ID before query execution.
Apply least-privilege database roles so the application account cannot read or modify tables outside its required scope.

bash

# Example WAF rule pattern (ModSecurity) to block SQLi against transfermoney.php
SecRule REQUEST_URI "@contains /transfermoney.php" \
  "chain,id:1011359,phase:2,deny,status:403,msg:'CVE-2025-11359 SQLi attempt'"
  SecRule ARGS:ID "@rx (?i)(union|select|sleep\(|--|';)" "t:none,t:urlDecode"