CVE-2025-62758 is a DOM-based Cross-site Scripting (XSS) vulnerability identified in the Funnelforms Free plugin for WordPress, affecting all versions up to 3.8. The vulnerability stems from improper neutralization of user-supplied input during web page generation, specifically in the Document Object Model (DOM) context. This allows an attacker to inject malicious JavaScript code that executes within the victim's browser when they interact with a crafted page or link. The attack vector is network-based, requiring the attacker to lure a user with low privileges to interact with a malicious payload (user interaction required). The vulnerability impacts confidentiality, integrity, and availability to a limited extent, as attackers can potentially steal session cookies, perform actions on behalf of the user, or cause UI manipulation and denial of service. The CVSS v3.1 score of 6.5 reflects a medium severity, with low attack complexity but requiring privileges and user interaction. No patches or known exploits are currently available, indicating the need for proactive mitigation. The vulnerability is classified under CWE-79, a common and well-understood category of XSS issues. Given the plugin's role in form creation, exploitation could lead to data leakage or unauthorized actions within affected websites.

For European organizations, this vulnerability could lead to unauthorized access to user sessions, theft of sensitive information submitted through forms, and potential defacement or manipulation of website content. Organizations relying on Funnelforms Free for customer interactions, lead generation, or data collection may face reputational damage and regulatory scrutiny, especially under GDPR if personal data is compromised. The vulnerability could be exploited to target employees or customers via phishing campaigns embedding malicious scripts. Although exploitation requires user interaction and some privileges, the widespread use of WordPress and associated plugins in Europe increases the attack surface. The impact on availability is limited but possible through UI manipulation or denial of service. The medium severity suggests a moderate risk, but the potential for chained attacks or further exploitation elevates the concern for critical business functions and customer trust.

European organizations should immediately audit their WordPress installations to identify the use of Funnelforms Free plugin versions up to 3.8. Since no official patch is currently available, temporary mitigations include disabling or removing the plugin if not essential. Implement strict Content Security Policies (CSP) to restrict script execution sources and reduce the impact of injected scripts. Employ Web Application Firewalls (WAF) with custom rules to detect and block suspicious input patterns targeting the plugin. Educate users and administrators about phishing risks and the importance of not interacting with untrusted links or inputs. Monitor web logs for unusual activity related to form submissions or script injections. When a patch becomes available, prioritize its deployment. Additionally, developers should review and sanitize all user inputs in the plugin codebase, especially those reflected in the DOM, to prevent future XSS issues.