CVE-2025-14735 is a stored Cross-Site Scripting (XSS) vulnerability identified in the nestornoe Amazon affiliate lite plugin for WordPress, affecting all versions up to and including 1.0.0. The vulnerability arises due to improper neutralization of script-related HTML tags (CWE-80) in the plugin's admin settings interface, allowing authenticated administrators to inject arbitrary JavaScript code. This malicious code is stored persistently and executed whenever any user accesses the infected page, potentially compromising user sessions or enabling further attacks such as privilege escalation or data exfiltration. The vulnerability specifically impacts multi-site WordPress installations or those where the unfiltered_html capability is disabled, limiting the scope but still significant in complex WordPress environments. The CVSS 3.1 base score is 4.4, indicating medium severity, with attack vector network-based, requiring high attack complexity and administrator privileges, no user interaction, and a scope change. Confidentiality and integrity impacts are low but present, while availability is unaffected. No public exploits have been reported, and no patches are currently available, increasing the importance of mitigation through configuration and access control. The vulnerability was published on December 20, 2025, and assigned by Wordfence. Given the plugin’s role in affiliate marketing, exploitation could lead to unauthorized script execution affecting site visitors and administrators alike.

For European organizations, especially those operating WordPress multi-site environments with the Amazon affiliate lite plugin installed, this vulnerability poses a risk of unauthorized script execution that can compromise the confidentiality and integrity of data. Attackers with administrator privileges could inject malicious scripts that execute in the context of other users, potentially leading to session hijacking, theft of sensitive information, unauthorized actions on behalf of users, or defacement of web content. Although the vulnerability requires high privileges, insider threats or compromised admin accounts could be leveraged to exploit it. The impact is particularly relevant for e-commerce and affiliate marketing sites that rely on this plugin, as exploitation could damage brand reputation, lead to financial losses, and violate data protection regulations such as GDPR if personal data is exposed. The multi-site limitation means larger organizations or hosting providers managing multiple WordPress sites are at higher risk. The absence of known exploits reduces immediate threat but does not eliminate risk, especially as attackers may develop exploits over time.

1. Restrict administrator access strictly to trusted personnel and enforce strong authentication mechanisms such as multi-factor authentication (MFA). 2. Monitor admin activities and audit logs for unusual changes in plugin settings or unexpected script injections. 3. Disable or limit the use of the Amazon affiliate lite plugin in multi-site WordPress environments until a patch is available. 4. If possible, enable the unfiltered_html capability cautiously or review its configuration to reduce exposure. 5. Employ Web Application Firewalls (WAF) with custom rules to detect and block suspicious script injections targeting the plugin’s admin pages. 6. Regularly update WordPress core and plugins, and subscribe to vendor advisories for timely patch releases. 7. Conduct security awareness training for administrators to recognize and prevent misuse of admin privileges. 8. Consider isolating critical WordPress sites or using containerization to limit lateral movement in case of compromise. 9. Implement Content Security Policy (CSP) headers to restrict execution of unauthorized scripts on affected sites. 10. Prepare incident response plans to quickly address any detected exploitation attempts.