CVE-2025-60135 identifies a stored Cross-site Scripting (XSS) vulnerability in the WeShare Buttons plugin developed by NIKITAS GEORGOPOULOS, specifically affecting versions up to and including 13.0.0. The vulnerability stems from improper neutralization of input during web page generation, which allows an attacker to inject malicious scripts that are stored and subsequently executed in the context of users visiting the affected web pages. The attack vector requires the attacker to have high privileges (PR:H) and user interaction (UI:R), indicating that exploitation is possible only if a privileged user inputs malicious content and another user interacts with the compromised content. The CVSS v3.1 base score is 5.9, categorized as medium severity, reflecting limited but significant impact on confidentiality, integrity, and availability. The vulnerability’s scope is changed (S:C), meaning the exploit can affect components beyond the initially vulnerable one, potentially impacting the entire web application. Although no known exploits are currently reported in the wild, the stored XSS nature of the flaw makes it a persistent threat, as injected scripts can affect multiple users over time. The plugin is commonly used to add social sharing buttons to websites, often integrated into WordPress or similar CMS platforms, making it a relevant target for attackers aiming to compromise web applications or steal session tokens, credentials, or perform actions on behalf of users. The lack of available patches at the time of disclosure necessitates immediate attention to mitigation strategies. The vulnerability’s exploitation could lead to session hijacking, defacement, or redirection to malicious sites, impacting user trust and organizational reputation.

For European organizations, the impact of CVE-2025-60135 can be significant, especially for those relying on the WeShare Buttons plugin within their web infrastructure. Exploitation could lead to unauthorized script execution, enabling attackers to steal sensitive information such as session cookies, perform actions on behalf of users, or spread malware. This can compromise the confidentiality and integrity of user data and disrupt availability through potential defacement or denial-of-service conditions. Organizations handling personal data under GDPR may face regulatory consequences if such a vulnerability leads to data breaches. The requirement for high privileges to inject malicious input limits the attack surface but also highlights the risk posed by insider threats or compromised privileged accounts. The stored nature of the XSS means that once exploited, the malicious payload can affect multiple users over time, increasing the potential damage. European businesses with customer-facing portals, e-commerce platforms, or internal collaboration tools using this plugin are particularly at risk. The reputational damage and operational disruption could be substantial, especially in sectors like finance, healthcare, and government services where trust and data integrity are paramount.

1. Monitor official sources and apply security patches or updates for the WeShare Buttons plugin immediately upon release. 2. Implement strict input validation and output encoding on all user-supplied data within the plugin’s context to prevent injection of malicious scripts. 3. Limit plugin usage to trusted, high-privilege users and audit their activities regularly to detect suspicious input or behavior. 4. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts on affected web pages. 5. Conduct regular security assessments and penetration testing focusing on web application components that integrate the plugin. 6. Educate administrators and privileged users about the risks of stored XSS and safe input handling practices. 7. Consider temporarily disabling the plugin if patching is delayed and the risk is deemed high. 8. Use web application firewalls (WAFs) configured to detect and block XSS payloads targeting the plugin. 9. Review and harden user authentication and session management to mitigate the impact of potential session hijacking. 10. Maintain comprehensive logging and monitoring to quickly identify exploitation attempts and respond accordingly.