CVE-2025-28876 in Skrill Official Plugin
Summary
by MITRE • 03/11/2025
Cross-Site Request Forgery (CSRF) vulnerability in Skrill_Team Skrill Official allows Cross Site Request Forgery. This issue affects Skrill Official: from n/a through 1.0.65.
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Analysis
by VulDB Data Team • 04/09/2025
The Cross-Site Request Forgery vulnerability identified as CVE-2025-28876 represents a critical security flaw within the Skrill Official payment processing system developed by Skrill_Team. This vulnerability specifically impacts versions ranging from the initial release through 1.0.65, creating a significant risk for users who interact with the payment gateway. The flaw stems from insufficient validation of request origins and lack of proper anti-CSRF token implementation, allowing malicious actors to exploit the system's trust in legitimate user sessions.
This CSRF vulnerability operates by tricking authenticated users into performing unintended actions on the Skrill payment system without their knowledge or consent. Attackers can craft malicious web pages or send phishing emails that, when visited by an authenticated user, automatically submit requests to the Skrill Official system. The vulnerability manifests because the application fails to properly verify the source of incoming requests, relying instead on session cookies alone for authentication. This design flaw aligns with CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications. The absence of anti-CSRF tokens and proper origin validation creates an environment where attackers can execute unauthorized transactions, modify user settings, or perform other malicious activities within the scope of the user's authenticated session.
The operational impact of this vulnerability extends beyond simple transaction manipulation to potentially compromise entire user accounts and financial data integrity. An attacker could leverage this flaw to transfer funds from user accounts, change payment preferences, or even create new payment methods without user authorization. The vulnerability affects the core payment processing functionality of the Skrill Official system, making it particularly dangerous for financial institutions and e-commerce platforms that rely on the service. The attack surface is broad since the vulnerability affects all versions up to 1.0.65, meaning a significant portion of the user base could be exposed to potential exploitation. According to ATT&CK framework domain T1566, this vulnerability represents a technique for Initial Access through the exploitation of web application flaws, while the subsequent actions could map to T1071 for application layer protocols and T1531 for Account Access.
Mitigation strategies for CVE-2025-28876 require immediate implementation of proper anti-CSRF token mechanisms throughout the Skrill Official system. Organizations should implement synchronizer token patterns where unique tokens are generated for each user session and validated on every state-changing request. The system must also enforce strict origin validation checks to ensure requests originate from legitimate sources within the same domain. Additionally, implementing Content Security Policy headers and using SameSite cookie attributes can provide additional layers of protection against CSRF attacks. The most effective long-term solution involves updating all affected versions to 1.0.66 or later, where proper CSRF protection mechanisms have been implemented. Security teams should also conduct comprehensive penetration testing and code reviews to identify any other potential CSRF vulnerabilities within the payment processing stack, ensuring compliance with OWASP Top Ten security standards and PCI DSS requirements for payment card data protection.