CVE-2025-62930 is a DOM-based Cross-site Scripting (XSS) vulnerability identified in RomanCode's MapSVG plugin, specifically affecting versions up to and including 8.7.15. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows malicious actors to inject and execute arbitrary JavaScript code within the victim's browser context. This type of XSS is client-side and occurs when the web application incorporates untrusted data into the Document Object Model (DOM) without adequate sanitization or encoding. The attack vector is remote and does not require authentication, but it does require user interaction, such as clicking a crafted link or visiting a malicious webpage that triggers the payload. The vulnerability impacts confidentiality and integrity by potentially exposing sensitive user data, session tokens, or enabling actions on behalf of the user, but it does not affect system availability. The CVSS v3.1 base score is 6.1, reflecting medium severity, with metrics indicating network attack vector, low attack complexity, no privileges required, user interaction needed, and a scope change due to the vulnerability affecting resources beyond the vulnerable component. No public exploits have been reported yet, but the presence of this vulnerability in a widely used WordPress plugin for interactive vector maps raises concern for websites relying on MapSVG for geographic or data visualization features. The lack of available patches at the time of disclosure necessitates immediate attention to alternative mitigations. The vulnerability was published on October 27, 2025, and assigned by Patchstack. Given the nature of the vulnerability, attackers could leverage it for phishing, session hijacking, or defacement attacks, especially targeting users with elevated privileges or sensitive data access.

For European organizations, the impact of CVE-2025-62930 can be significant, especially for those relying on MapSVG to provide interactive maps on their websites, such as government portals, tourism boards, logistics companies, and media outlets. Successful exploitation could lead to theft of user credentials, session tokens, or other sensitive information, undermining user trust and potentially leading to data breaches. The integrity of displayed information could be compromised, misleading users or damaging organizational reputation. Although availability is not directly impacted, the indirect consequences of exploitation, such as blacklisting by browsers or search engines due to malicious content, could disrupt service accessibility. The vulnerability's medium severity suggests that while it is not critical, it remains a viable attack vector, particularly in targeted spear-phishing campaigns or supply chain attacks. European data protection regulations like GDPR emphasize the importance of safeguarding personal data, and exploitation of this vulnerability could lead to regulatory penalties if personal data is compromised. Organizations with high web traffic and public-facing services are at increased risk, and the potential for lateral movement or further exploitation exists if attackers combine this XSS with other vulnerabilities.

1. Immediate implementation of strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS payloads. 2. Employ input validation and output encoding on all user-supplied data incorporated into the DOM, especially in custom implementations or extensions of MapSVG. 3. Monitor and audit web application logs for unusual or suspicious activity indicative of XSS exploitation attempts. 4. Educate users and administrators about the risks of clicking on untrusted links or interacting with suspicious content. 5. Once available, promptly apply official patches or updates from RomanCode addressing this vulnerability. 6. Consider temporary removal or disabling of the MapSVG plugin if patching is delayed and the risk is deemed high. 7. Use web application firewalls (WAFs) with updated signatures to detect and block known XSS attack patterns targeting MapSVG. 8. Conduct regular security assessments and penetration testing focusing on client-side vulnerabilities in web applications. 9. Implement multi-factor authentication (MFA) to reduce the impact of credential theft resulting from XSS attacks. 10. Maintain an incident response plan that includes procedures for handling XSS incidents and potential data breaches.