CVE-2025-12017 in VNPAY Payment Gateway Plugin
Summary
by MITRE • 10/24/2025
The VNPAY Payment gateway plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'message' parameter in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 10/24/2025
The vulnerability identified as CVE-2025-12017 affects the VNPAY Payment gateway plugin for WordPress, representing a critical security flaw that exposes users to reflected cross-site scripting attacks. This issue exists within all versions up to and including version 1.0.0 of the plugin, making it a widespread concern for WordPress installations that utilize this payment processing solution. The vulnerability stems from inadequate input sanitization and output escaping mechanisms within the plugin's codebase, creating an exploitable entry point for malicious actors seeking to compromise user sessions or inject harmful content into web pages.
The technical implementation of this vulnerability occurs through the 'message' parameter which is improperly handled within the plugin's processing logic. When user-supplied input containing malicious scripts is passed through this parameter without proper sanitization, the system fails to escape special characters appropriately before rendering the output. This allows attackers to inject malicious JavaScript code that gets executed in the context of other users' browsers when they access pages containing the vulnerable parameter. The reflected nature of this vulnerability means that the malicious script is reflected off the web server rather than being stored, making it particularly dangerous as it requires minimal persistence and can be delivered through crafted URLs.
The operational impact of this vulnerability extends beyond simple script injection, as it creates opportunities for attackers to perform various malicious activities including session hijacking, credential theft, and redirection to malicious websites. Unauthenticated attackers can exploit this weakness by crafting specially formatted links containing malicious payloads that, when clicked by unsuspecting users, execute the injected scripts in their browsers. This creates a significant risk for e-commerce sites using the VNPAY plugin, as users conducting payment transactions could have their sensitive information compromised or redirected to fraudulent sites. The vulnerability particularly affects users who may be logged into WordPress admin panels or payment processing interfaces, as successful exploitation could lead to complete account compromise.
Security professionals should note that this vulnerability aligns with CWE-79, which specifically addresses Cross-Site Scripting flaws in software applications. The issue also maps to ATT&CK technique T1566.001, which covers the use of spearphishing attachments or links to deliver malicious payloads. Organizations should immediately implement mitigations including updating to the latest version of the VNPAY plugin if available, implementing input validation and output escaping measures, and deploying web application firewalls to detect and block malicious payloads. Additionally, administrators should educate users about the dangers of clicking suspicious links and implement content security policies to limit the execution of unauthorized scripts within their web environments. The vulnerability demonstrates the critical importance of proper input validation and output sanitization in web applications, particularly those handling sensitive financial data and user credentials.