CVE-2025-53245 is a stored Cross-site Scripting (XSS) vulnerability found in the Afzal Multani WP Logo Changer WordPress plugin, specifically affecting the am-login-logo feature. Stored XSS occurs when malicious input is improperly sanitized and then permanently stored by the application, later rendered in web pages viewed by other users. In this case, the plugin fails to properly neutralize input during web page generation, allowing attackers with low privileges (authenticated users) to inject malicious JavaScript code. When other users view the affected pages, the injected scripts execute in their browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity. The vector metrics indicate network attack vector (AV:N), low attack complexity (AC:L), privileges required (PR:L), user interaction required (UI:R), scope changed (S:C), and impacts on confidentiality and integrity (C:L, I:L) but no impact on availability (A:N). No public exploits are currently known, but the vulnerability is published and could be weaponized in the future. The plugin version affected is up to 1.2, with no patch links currently available. The vulnerability was reserved in June 2025 and published in November 2025. As a WordPress plugin, it is widely used in various organizations, making this a relevant threat vector for websites relying on this plugin for branding customization.

For European organizations, the impact of this stored XSS vulnerability can be significant, especially for those relying on the WP Logo Changer plugin to customize their WordPress login pages. Exploitation could allow attackers to execute arbitrary scripts in the context of authenticated users, leading to session hijacking, theft of sensitive information, or manipulation of user actions. This can result in compromised user accounts, defacement of websites, or phishing attacks targeting employees or customers. Although the vulnerability does not affect availability, the confidentiality and integrity of user data and site content are at risk. Organizations in sectors with high regulatory requirements for data protection, such as finance, healthcare, and government, may face compliance issues if exploited. Additionally, reputational damage from successful attacks could impact customer trust and business continuity. Since exploitation requires authenticated access and user interaction, insider threats or compromised user credentials increase the risk. The absence of known exploits currently provides a window for proactive mitigation, but the medium severity score warrants timely attention.

1. Monitor for plugin updates from the vendor and apply patches immediately once available to remediate the vulnerability. 2. Restrict access to the WP Logo Changer plugin settings and features to trusted, minimal-privilege users to reduce the risk of exploitation by authenticated attackers. 3. Implement Web Application Firewalls (WAFs) with rules designed to detect and block XSS payloads, especially on pages where the plugin outputs user-supplied content. 4. Conduct regular security audits and code reviews of WordPress plugins to identify and remediate insecure input handling. 5. Enforce strong authentication mechanisms and monitor for suspicious login activities to reduce the risk of compromised accounts being used to exploit the vulnerability. 6. Educate administrators and users about the risks of XSS and the importance of cautious interaction with unexpected content or links. 7. Use Content Security Policy (CSP) headers to limit the execution of unauthorized scripts on affected web pages. 8. Consider temporarily disabling or replacing the WP Logo Changer plugin if patching is delayed and the risk is deemed unacceptable.