CVE-2025-13729 identifies a stored cross-site scripting (XSS) vulnerability in the 'Entry Views' WordPress plugin developed by greenshady. The vulnerability arises from improper neutralization of user-supplied input within the plugin's 'entry-views' shortcode, which fails to adequately sanitize and escape attributes before rendering them in web pages. This flaw allows authenticated users with contributor-level permissions or higher to inject arbitrary JavaScript code that is stored persistently and executed in the context of any user who views the affected page. The attack vector requires authentication but no user interaction beyond page viewing. The vulnerability impacts confidentiality and integrity by enabling theft of cookies, session tokens, or other sensitive information, and potentially allows attackers to perform actions on behalf of users. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, privileges required at the contributor level, no user interaction, and a scope change due to affecting other users. No patches or updates are currently linked, and no active exploitation has been reported. The vulnerability is classified under CWE-79, indicating improper input neutralization during web page generation. This issue is significant for WordPress sites using the Entry Views plugin, especially those with multiple contributors and public-facing content.

For European organizations, this vulnerability poses a moderate risk primarily to websites running WordPress with the affected Entry Views plugin. Exploitation can lead to unauthorized disclosure of sensitive user information such as authentication cookies or personal data, enabling session hijacking and impersonation. This can result in data breaches, reputational damage, and potential regulatory non-compliance under GDPR if personal data is compromised. The vulnerability could also facilitate defacement or injection of malicious content, undermining trust in the affected websites. Since contributor-level access is sufficient to exploit the flaw, insider threats or compromised contributor accounts increase risk. Organizations relying on WordPress for content management, especially media, education, and government sectors with multiple contributors, are at heightened risk. The absence of known exploits reduces immediate threat but does not eliminate the risk of future attacks. The medium severity score indicates a significant but not critical threat, emphasizing the need for timely mitigation to prevent escalation.

1. Immediately audit WordPress installations to identify use of the Entry Views plugin and confirm version status. 2. Restrict contributor-level access strictly to trusted users and review user permissions regularly to minimize risk of malicious input. 3. Apply any available patches or updates from the plugin developer as soon as they are released; if no official patch exists, consider disabling or removing the plugin temporarily. 4. Implement web application firewalls (WAFs) with rules to detect and block XSS payloads, particularly those targeting shortcode parameters. 5. Employ Content Security Policy (CSP) headers to restrict execution of unauthorized scripts on affected sites. 6. Conduct security awareness training for contributors on safe input practices and potential risks of injecting scripts. 7. Monitor website logs and user activity for suspicious behavior indicative of exploitation attempts. 8. Consider code review or custom sanitization of shortcode inputs if plugin modification is feasible. 9. Backup website data regularly to enable recovery in case of compromise. 10. Engage with WordPress security communities for updates and shared mitigation strategies.