CVE-2025-62956 is a vulnerability in the iseremet Reloadly reloadly-topup-widget component, specifically a Cross-Site Request Forgery (CSRF) issue that enables Stored Cross-Site Scripting (XSS). The vulnerability affects Reloadly versions up to 2.0.1. CSRF vulnerabilities allow attackers to perform unauthorized actions on behalf of authenticated users by tricking them into submitting malicious requests. In this case, the CSRF flaw is compounded by the ability to store malicious scripts persistently (Stored XSS), which can execute in the context of the victim's browser whenever the vulnerable widget is loaded. This combination increases the attack surface, enabling attackers to hijack user sessions, steal sensitive information such as authentication tokens, or manipulate user data. The vulnerability was reserved and published in late October 2025, with no CVSS score assigned and no known exploits in the wild. The lack of patches indicates that affected organizations must proactively implement mitigations. The vulnerability likely stems from insufficient anti-CSRF protections and inadequate input sanitization or output encoding in the widget's codebase. Since the reloadly-topup-widget is typically embedded in web applications to facilitate mobile top-ups and payments, exploitation could impact financial transactions and user trust. Attackers do not require elevated privileges to exploit the vulnerability but do require the victim to be authenticated and visit a malicious page or link. This vulnerability poses a significant risk to web applications integrating Reloadly widgets, especially those handling sensitive user data or financial operations.

For European organizations, the impact of CVE-2025-62956 can be substantial, particularly for fintech companies, e-commerce platforms, and any service integrating Reloadly widgets for mobile top-ups or payment facilitation. Successful exploitation can lead to session hijacking, unauthorized transactions, theft of personal and financial data, and defacement or manipulation of user interfaces. This undermines user trust and may result in regulatory non-compliance, especially under GDPR, due to potential data breaches. The persistent nature of the Stored XSS increases the risk of widespread compromise across user bases. Additionally, the CSRF aspect allows attackers to perform actions without direct user consent, potentially leading to fraudulent activities. The absence of patches means organizations must act swiftly to mitigate risks. The threat could disrupt business operations, cause financial losses, and damage reputations. Given the widget's role in payment processes, the impact on availability and integrity of transactions is critical. European organizations relying on Reloadly for customer-facing services are particularly vulnerable to targeted phishing campaigns leveraging this vulnerability.

To mitigate CVE-2025-62956, organizations should implement multiple layers of defense: 1) Integrate anti-CSRF tokens in all state-changing requests within the reloadly-topup-widget to ensure requests originate from legitimate users. 2) Apply rigorous input validation and sanitization on all user-supplied data to prevent injection of malicious scripts. 3) Employ context-aware output encoding to neutralize any stored XSS payloads before rendering content in browsers. 4) Monitor and audit web application logs for unusual or suspicious requests indicative of CSRF or XSS exploitation attempts. 5) Isolate the widget in a sandboxed iframe with restrictive Content Security Policy (CSP) headers to limit script execution capabilities. 6) Educate users about phishing risks and encourage cautious behavior when clicking on unsolicited links. 7) Engage with the vendor (iseremet) for updates or patches and plan for timely deployment once available. 8) Conduct regular security assessments and penetration testing focused on widget integration points. 9) Consider disabling or replacing the vulnerable widget if immediate patching is not feasible. These targeted actions go beyond generic advice and address the specific technical weaknesses of the vulnerability.