CVE-2025-63048 identifies a DOM-based Cross-site Scripting (XSS) vulnerability in the ListingPro Lead Form plugin developed by CridioStudio, affecting all versions up to and including 1.0.2. The vulnerability stems from improper neutralization of input during web page generation, specifically within the lead form component, which allows an attacker to inject malicious JavaScript code that executes in the context of the victim's browser. This type of XSS is DOM-based, meaning the malicious payload is executed as a result of unsafe client-side script processing rather than server-side output encoding failures. The vulnerability requires an attacker to have low privileges (PR:L) and user interaction (UI:R), such as tricking a user into clicking a crafted link or submitting a manipulated form. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) indicates network attack vector, low complexity, privileges required, user interaction required, scope changed, and low impact on confidentiality, integrity, and availability. The scope change (S:C) means the vulnerability can affect resources beyond the initially vulnerable component, potentially compromising the entire web application session or user data. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk to web applications using this plugin, especially those handling sensitive user data or authentication. The ListingPro Lead Form is commonly used in WordPress environments for lead generation, making it a target for attackers aiming to steal session cookies, perform phishing, or execute unauthorized actions via the victim's browser. The absence of published patches at the time of disclosure necessitates immediate attention to mitigation strategies.

For European organizations, this vulnerability can lead to unauthorized access to user sessions, data leakage, and manipulation of user interactions within affected web applications. Organizations relying on the ListingPro Lead Form plugin for customer engagement or lead management may face reputational damage, regulatory non-compliance (e.g., GDPR breaches due to data exposure), and potential financial losses from fraud or service disruption. The medium severity rating reflects the need for user interaction and privileges, but the scope change and potential for session hijacking elevate the risk in environments with high user traffic or sensitive data. Attackers could exploit this vulnerability to conduct targeted phishing campaigns or escalate privileges within compromised web applications. Given the widespread use of WordPress and associated plugins in Europe, especially among SMEs and service providers, the impact could be broad if not addressed promptly.

1. Monitor CridioStudio and ListingPro official channels for security patches and apply updates immediately upon release. 2. Implement strict input validation and sanitization on all user-supplied data within the lead form, ensuring that any dynamic content is properly encoded before insertion into the DOM. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. 4. Conduct regular security audits and penetration testing focusing on client-side scripting and input handling in web forms. 5. Educate users and administrators about the risks of clicking on suspicious links or submitting untrusted data. 6. Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting the ListingPro Lead Form. 7. If immediate patching is not possible, temporarily disable or restrict access to the vulnerable lead form component to reduce exposure.