CVE-2025-11333 in Online Banking System
Summary
by MITRE • 10/06/2025
A vulnerability was identified in langleyfcu Online Banking System up to 57437e6400ce0ae240e692c24e6346b8d0c17d7a. This impacts an unknown function of the file /customer_add_action.php of the component Add Customer Page. The manipulation of the argument First Name leads to cross site scripting. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 10/06/2025
This vulnerability resides within the langleyfcu Online Banking System where a cross site scripting flaw has been identified in the customer_add_action.php file. The specific weakness occurs when processing the First Name parameter, which allows malicious actors to inject arbitrary script code into the web application's response. The vulnerability affects the Add Customer Page functionality and represents a classic client-side attack vector that can compromise user sessions and data integrity. The issue stems from insufficient input validation and output encoding mechanisms within the application's user interface components. The vulnerability is particularly concerning because it enables remote code execution without requiring authentication, making it accessible to any internet-connected user who can interact with the banking system's customer management interface.
The technical implementation of this cross site scripting vulnerability follows the characteristics of CWE-79 - Improper Neutralization of Input During Web Page Generation. The application fails to properly sanitize user-supplied input before incorporating it into dynamic web content, allowing attackers to inject malicious javascript payloads through the First Name field. The exploitability of this vulnerability is enhanced by the fact that the attack can be executed remotely without any privileged access requirements, as evidenced by the publicly available exploit code. This particular implementation likely involves direct insertion of user input into html output without proper html entity encoding or javascript context sanitization. The rolling release deployment model of this banking system complicates remediation efforts since specific version information is not provided, making it difficult for organizations to determine their exposure level.
The operational impact of this vulnerability extends beyond simple data theft to encompass session hijacking, credential theft, and potential redirection to malicious websites. Attackers could leverage this flaw to execute malicious scripts that capture user credentials, steal session cookies, or redirect victims to phishing sites that mimic the legitimate banking interface. The banking environment creates additional risks as compromised user sessions could lead to unauthorized financial transactions and account takeovers. The vulnerability's presence in the customer management system also poses risks to the broader organizational infrastructure, as compromised user accounts could potentially provide access to additional system components. Organizations utilizing this system face significant reputational damage risks if successful attacks occur, given the sensitive nature of banking data and the trust relationship between financial institutions and their customers.
Mitigation strategies should focus on immediate input validation and output encoding implementation across all user input fields within the application. Organizations must implement comprehensive content security policies that prevent script execution in response content and ensure proper html entity encoding for all dynamic data. The application should utilize parameterized input validation that rejects potentially malicious payloads before processing user requests. Security patches should be implemented immediately to address the specific vulnerability in the customer_add_action.php file, with additional monitoring for similar issues in other application components. Network-level protections such as web application firewalls and intrusion detection systems should be configured to detect and block known exploit patterns. Regular security assessments and code reviews should be conducted to identify and remediate similar input validation weaknesses throughout the application codebase, following security best practices outlined in the OWASP Top Ten and NIST cybersecurity frameworks.