CVE-2025-60135 is a stored cross-site scripting (XSS) vulnerability found in the WeShare Buttons plugin by NIKITAS GEORGOPOULOS, specifically affecting versions up to 13.0.0. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows an attacker to inject malicious scripts that are stored and later executed in the context of users visiting the affected web pages. This type of vulnerability can be exploited to steal session cookies, perform actions on behalf of authenticated users, or deliver malware. The CVSS 3.1 base score is 5.9, indicating a medium severity level. The vector indicates network attack vector (AV:N), low attack complexity (AC:L), but requires high privileges (PR:H) and user interaction (UI:R), with a scope change (S:C) and limited impact on confidentiality, integrity, and availability (C:L/I:L/A:L). Although no known exploits are reported in the wild, the vulnerability poses a risk particularly to websites using this plugin for social sharing features. The vulnerability is significant because stored XSS can affect multiple users and persist over time, increasing the attack surface. The lack of available patches at the time of publication necessitates immediate attention to mitigation strategies.

For European organizations, the impact of CVE-2025-60135 can be substantial, especially for those relying on the WeShare Buttons plugin on public-facing websites. Successful exploitation could lead to session hijacking, unauthorized actions performed by users, defacement, or distribution of malware, undermining user trust and potentially leading to data breaches. This can affect confidentiality by exposing sensitive user data, integrity by allowing unauthorized content manipulation, and availability by enabling denial-of-service conditions through malicious scripts. Given the requirement for high privileges and user interaction, internal users or administrators could be targeted to escalate attacks. The reputational damage and potential regulatory consequences under GDPR for data exposure or inadequate security controls could be significant. Organizations in sectors such as e-commerce, government, and media, which often use social sharing plugins, are particularly at risk.

1. Monitor official sources and apply security patches or updates for WeShare Buttons immediately once available. 2. Until patches are released, consider disabling or removing the WeShare Buttons plugin from websites, especially those with high traffic or sensitive data. 3. Implement strict input validation and output encoding on all user inputs related to the plugin to prevent injection of malicious scripts. 4. Employ Content Security Policy (CSP) headers to restrict script execution and mitigate the impact of XSS attacks. 5. Conduct regular security audits and penetration testing focusing on web application vulnerabilities, including XSS. 6. Educate administrators and users about the risks of clicking on suspicious links or interacting with untrusted content. 7. Use web application firewalls (WAF) configured to detect and block XSS attack patterns targeting the affected plugin. 8. Review and limit user privileges to reduce the risk of high-privilege exploitation. 9. Monitor logs and user activity for signs of exploitation attempts or unusual behavior related to the plugin.