CVE-2025-57898 is a medium-severity Stored Cross-Site Scripting (XSS) vulnerability identified in the WP Frontend Admin plugin developed by Jose Vega for WordPress. The vulnerability arises due to improper neutralization of input during web page generation, classified under CWE-79. Specifically, the plugin versions up to 1.22.6 fail to adequately sanitize or encode user-supplied input before rendering it in the frontend admin interface, allowing an attacker with at least low privileges (PR:L) and requiring user interaction (UI:R) to inject malicious scripts that persist in the application. The vulnerability has a CVSS v3.1 base score of 6.5, reflecting a network attack vector (AV:N), low attack complexity (AC:L), partial privileges required, and a scope change (S:C) indicating that the vulnerability affects components beyond the initially vulnerable module. The impact includes limited confidentiality, integrity, and availability losses, as the injected scripts can execute in the context of other users, potentially leading to session hijacking, defacement, or unauthorized actions. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability affects all versions up to 1.22.6, with no specific earliest affected version identified. Given the plugin’s role in managing WordPress frontend administration, exploitation could disrupt site management and user trust.

For European organizations using WordPress sites with the WP Frontend Admin plugin, this vulnerability poses a tangible risk of persistent XSS attacks that can compromise user sessions, steal sensitive information, or manipulate site content. Since WordPress powers a significant portion of websites across Europe, including corporate, governmental, and e-commerce platforms, exploitation could lead to reputational damage, regulatory non-compliance (e.g., GDPR breaches if personal data is exposed), and operational disruptions. Attackers could leverage this vulnerability to target site administrators or users with elevated privileges, escalating the impact. The scope change in the CVSS vector suggests that the vulnerability could affect multiple components or users beyond the initially targeted module, increasing the potential damage. Although no active exploits are reported, the ease of exploitation (low complexity) and network accessibility make it a credible threat, especially in environments where user interaction is common. Organizations with public-facing WordPress sites that rely on this plugin should be particularly vigilant.

1. Immediate action should include auditing all WordPress installations for the presence of WP Frontend Admin plugin versions up to 1.22.6 and disabling or restricting access to the plugin until a patch is available. 2. Implement strict Content Security Policy (CSP) headers to limit the execution of unauthorized scripts and reduce the impact of XSS attacks. 3. Enforce least privilege principles by ensuring that only trusted users have the necessary permissions to interact with the plugin’s frontend admin features. 4. Employ Web Application Firewalls (WAFs) with rules tuned to detect and block typical XSS payloads targeting WordPress plugins. 5. Monitor logs and user activity for unusual behavior indicative of XSS exploitation attempts. 6. Once a patch or update is released by the vendor, prioritize prompt testing and deployment. 7. Educate administrators and users about the risks of clicking on suspicious links or interacting with untrusted content within the WordPress admin interface. 8. Regularly update all WordPress plugins and core installations to minimize exposure to known vulnerabilities.