CVE-2026-15532 in Online Book Store System
Summary
by MITRE • 07/13/2026
A vulnerability was identified in SourceCodester Online Book Store System 1.0. This issue affects some unknown processing of the component User Management Module. Such manipulation of the argument Name/Username leads to cross site scripting. The attack can be executed remotely. The exploit is publicly available and might be used.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 07/13/2026
This vulnerability resides within the SourceCodester Online Book Store System version 1.0, specifically within its User Management Module component where user input processing fails to properly sanitize or validate username parameters. The flaw represents a classic cross-site scripting vulnerability that allows remote attackers to inject malicious scripts into web pages viewed by other users. The vulnerability occurs when the system processes user-provided name or username arguments without adequate input validation or output encoding, creating an opportunity for attackers to execute arbitrary JavaScript code within the context of legitimate user sessions.
The technical nature of this vulnerability aligns with CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental web application security weakness that enables attackers to inject malicious scripts into web applications. This particular implementation flaw demonstrates a failure in input sanitization and output encoding mechanisms within the user management functionality. The attack vector is remote, meaning an attacker can exploit this vulnerability without requiring physical access to the target system or direct network proximity.
The operational impact of this vulnerability is significant as it enables persistent cross-site scripting attacks that can compromise user sessions and potentially lead to account takeovers. When exploited, the malicious scripts can steal session cookies, redirect users to phishing sites, or perform unauthorized actions on behalf of authenticated users. The fact that a publicly available exploit exists increases the risk profile substantially, as it lowers the barrier to successful exploitation. Attackers can leverage this vulnerability to gain unauthorized access to user accounts, potentially accessing personal information, making fraudulent purchases, or using compromised accounts for further attacks.
Mitigation strategies should focus on implementing robust input validation and output encoding measures within the User Management Module. The system must sanitize all user-provided input including usernames before processing or displaying them in web pages. This includes applying proper HTML entity encoding to prevent script execution in contexts where user data is rendered. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded and executed. Regular security testing including dynamic application security testing and static code analysis should be conducted to identify similar vulnerabilities throughout the application. The implementation of proper web application firewalls and input validation libraries can also help prevent such attacks by automatically detecting and blocking malicious input patterns before they reach the vulnerable processing components. Organizations should also consider implementing secure coding practices and regular security training for developers to prevent similar issues in future releases.
The vulnerability demonstrates a critical gap in the application's defense-in-depth strategy, particularly concerning user input handling and web application security controls. According to ATT&CK framework, this represents a T1059.007 technique involving script injection within web applications, which can lead to privilege escalation and persistent access. The combination of remote exploitability, public availability, and the fundamental nature of the flaw creates a high-severity risk that requires immediate attention and remediation to prevent potential exploitation in real-world scenarios.
This vulnerability type is particularly dangerous because it affects core user management functionality where users expect secure handling of their personal information and authentication credentials. The impact extends beyond simple script execution to potentially enable more sophisticated attacks including session hijacking, data exfiltration, and privilege escalation within the application's user context. The presence of publicly available exploit code means that this vulnerability could be actively targeted by threat actors without requiring advanced technical skills or custom exploitation development.