CVE-2025-64194 is a stored Cross-site Scripting (XSS) vulnerability found in the ThimPress Eduma WordPress theme, affecting all versions up to and including 5.7.6. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be stored and later executed in the context of users visiting the affected site. This type of vulnerability can be exploited by an attacker who has at least limited privileges (PR:L) on the site and requires user interaction (UI:R), such as tricking a user into clicking a crafted link or viewing a malicious page. The vulnerability impacts confidentiality, integrity, and availability, as attackers can steal session cookies, perform actions on behalf of users, or deface content. The CVSS 3.1 base score is 6.5, reflecting medium severity with network attack vector (AV:N), low attack complexity (AC:L), partial privileges required, and scope change (S:C), meaning the vulnerability can affect components beyond the initially vulnerable one. No known public exploits are reported yet, but the presence of stored XSS in a popular educational theme poses a significant risk, especially for organizations relying on Eduma for e-learning platforms. The vulnerability was published on October 29, 2025, and no official patches or mitigation links are currently provided, indicating the need for vigilance and proactive measures.

For European organizations, especially educational institutions and e-learning providers using the Eduma theme, this vulnerability can lead to unauthorized access to user sessions, theft of sensitive data, and potential defacement or disruption of services. The stored nature of the XSS means malicious scripts persist on the server and can affect multiple users, increasing the attack surface. Confidentiality is at risk due to possible cookie theft or credential exposure, integrity can be compromised by unauthorized content changes, and availability may be affected if attackers disrupt normal operations. Given the widespread use of WordPress and Eduma in Europe’s education sector, the impact could be significant, leading to reputational damage, regulatory penalties under GDPR if personal data is compromised, and operational disruptions. The requirement for some privileges and user interaction reduces the ease of exploitation but does not eliminate the threat, especially in environments with many users and varying privilege levels.

1. Monitor ThimPress and WordPress security advisories closely and apply official patches or updates for Eduma as soon as they are released. 2. Until patches are available, restrict user privileges to the minimum necessary to reduce the risk of attackers injecting malicious input. 3. Implement strict input validation and output encoding on all user-supplied data within the Eduma theme, especially in areas that generate web pages dynamically. 4. Deploy Content Security Policy (CSP) headers to limit the execution of unauthorized scripts and reduce the impact of XSS attacks. 5. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. 6. Educate users and administrators about phishing and social engineering tactics to reduce successful user interaction exploitation. 7. Consider using Web Application Firewalls (WAFs) with rules targeting XSS payloads to provide an additional layer of defense. 8. Backup website data regularly to enable quick recovery in case of defacement or compromise.