CVE-2024-27193 in PayU India Plugin
Summary
by MITRE • 03/15/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PayU India PayU India payu-india allows DOM-Based XSS.This issue affects PayU India: from n/a through <= 3.8.8.
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Analysis
by VulDB Data Team • 04/01/2026
The vulnerability identified as CVE-2024-27193 represents a critical cross-site scripting weakness within the PayU India payment processing platform, specifically manifesting as a DOM-based XSS flaw that undermines web application security. This vulnerability resides in the improper neutralization of input during web page generation processes, creating an attack vector where malicious scripts can be injected and executed within the victim's browser context. The flaw affects all versions of the PayU India payu-india component up to and including version 3.8.8, indicating a significant surface area for potential exploitation across various system deployments. The vulnerability classification aligns with CWE-79, which specifically addresses Cross-site Scripting flaws in web applications, and demonstrates how input validation failures can lead to severe security consequences in payment processing environments where user data integrity is paramount.
The technical mechanism underlying this DOM-based XSS vulnerability involves the manipulation of JavaScript code execution within the browser's Document Object Model, where user-supplied input is not properly sanitized before being processed and rendered in web pages. Attackers can exploit this weakness by crafting malicious input parameters that, when processed by the vulnerable application, result in the injection of executable scripts into the DOM structure. This particular variant operates at the client-side level, meaning that the malicious payload is executed within the victim's browser environment rather than being stored on the server, making detection and prevention more challenging. The vulnerability's impact is amplified by the nature of payment processing systems, where such attacks could potentially intercept sensitive transaction data, user credentials, or manipulate payment flows to redirect funds or gain unauthorized access to financial information.
The operational impact of this vulnerability extends beyond simple script execution, as it represents a significant threat to the integrity and confidentiality of payment processing transactions within the PayU India ecosystem. An attacker exploiting this vulnerability could potentially execute malicious code in the context of a victim's browser session, enabling them to access session cookies, modify page content, redirect users to fraudulent sites, or capture sensitive payment information during transaction processing. The consequences of such an attack could result in financial loss for both the payment processor and end-users, while also potentially compromising the trust and reputation of the PayU India platform. This vulnerability particularly threatens the security of sensitive financial data exchanges and could facilitate more sophisticated attacks such as session hijacking, credential theft, or man-in-the-middle attacks within the payment processing workflow.
Organizations utilizing affected versions of the PayU India payu-india component should implement immediate remediation measures including input validation, output encoding, and proper sanitization of all user-supplied data before processing. The recommended mitigation strategies include implementing Content Security Policy headers, employing proper DOM-based XSS prevention techniques, and conducting thorough code reviews to identify and address similar input handling vulnerabilities. Security teams should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit this vulnerability. According to ATT&CK framework category T1203, this vulnerability falls under the domain of "Exploitation for Client Execution" where adversaries leverage client-side vulnerabilities to execute malicious code, making it essential for security operations to monitor for indicators of compromise related to this specific XSS pattern. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date security practices in financial applications, where the stakes of input validation failures are particularly high due to the sensitive nature of transactional data being processed.