CVE-2026-19922 in Online Shopping System
Summary
by MITRE • 08/16/2026
A security flaw has been discovered in code-projects Online Shopping System 1.0. Affected by this issue is some unknown functionality of the file /checkout.php. Performing a manipulation of the argument amount_1 results in cross site scripting. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
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Analysis
by VulDB Data Team • 08/16/2026
This vulnerability represents a critical cross site scripting flaw within the code-projects Online Shopping System 1.0 that specifically affects the checkout functionality. The issue stems from improper input validation and output encoding mechanisms within the /checkout.php file where user-supplied data is not adequately sanitized before being rendered in web responses. The vulnerability manifests when an attacker manipulates the amount_1 parameter, which likely represents monetary values or quantity inputs during the checkout process. This allows malicious actors to inject arbitrary javascript code that executes in the context of other users' browsers who visit the compromised page.
The technical nature of this flaw aligns with CWE-79 Cross Site Scripting vulnerability classification, where insufficient validation of user-provided data leads to execution of unauthorized scripts. The attack vector is remote and unauthenticated, meaning any user can exploit this without requiring prior access credentials or privileged positions within the system. The fact that a public exploit has been released significantly elevates the threat level as it provides readily available tools for attackers to leverage this vulnerability across multiple installations. This makes the vulnerability particularly dangerous in environments where the shopping system is widely deployed and accessible to untrusted users.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking. Attackers could potentially redirect users to malicious sites, steal sensitive payment information, manipulate transaction amounts, or even inject malware through browser-based exploits. The compromised checkout functionality directly threatens the integrity of financial transactions and customer data protection mechanisms that the online shopping system is designed to maintain. Additionally, successful exploitation could lead to complete compromise of user sessions, enabling persistent access to customer accounts and potentially allowing attackers to modify order details or redirect payments to unauthorized recipients.
Mitigation strategies should focus on implementing proper input validation and output encoding throughout the application's data flow processing. The immediate fix requires sanitizing all user inputs including the amount_1 parameter through proper escaping mechanisms before rendering them in HTML contexts. Implementing content security policies and using secure coding practices such as prepared statements for database operations can further reduce risk exposure. Regular security testing and code reviews should be conducted to identify similar vulnerabilities across other application components. Organizations using this system must also consider implementing web application firewalls and monitoring for suspicious parameter manipulation attempts. The vulnerability demonstrates the critical importance of following secure coding guidelines and maintaining up-to-date security patches as outlined in industry frameworks such as OWASP Top Ten and NIST cybersecurity standards.