CVE-2025-15266 is a stored cross-site scripting (XSS) vulnerability identified in the GeekyBot — Generate AI Content Without Prompt, Chatbot and Lead Generation plugin for WordPress, developed by ahmadgb. The vulnerability exists in all versions up to and including 1.1.7 due to insufficient sanitization of user input and lack of proper output escaping in the chat message field. Specifically, attackers can submit malicious JavaScript code as part of chat messages, which are then stored and rendered on the Chat History page viewed by administrators. Because the vulnerability does not require authentication or user interaction, it allows unauthenticated remote attackers to inject scripts that execute in the context of an administrator’s browser session. This can lead to session hijacking, privilege escalation, or unauthorized actions within the WordPress admin interface. The CVSS 3.1 score of 7.2 (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N) indicates network exploitable, low attack complexity, no privileges or user interaction required, with a scope change affecting confidentiality and integrity but not availability. Although no active exploits have been reported, the vulnerability poses a significant risk due to the widespread use of WordPress and the plugin’s role in AI content generation and lead generation workflows. The lack of available patches at the time of publication necessitates immediate attention to mitigate risk.

For European organizations, this vulnerability could lead to unauthorized access to administrative functions within WordPress sites using the GeekyBot plugin. Attackers exploiting this flaw can execute arbitrary scripts in the administrator’s browser, potentially stealing session cookies, deploying further malware, or manipulating site content and configurations. This compromises the confidentiality and integrity of sensitive business data and could disrupt marketing and lead generation activities dependent on the plugin. Given the plugin’s AI content generation role, attackers might also manipulate generated content, impacting brand reputation and customer trust. The vulnerability’s ease of exploitation without authentication increases the risk of widespread attacks, especially against organizations with publicly accessible WordPress admin interfaces. This threat is particularly relevant for sectors with high digital engagement such as e-commerce, media, and professional services across Europe. Additionally, the scope change in the CVSS vector suggests that the vulnerability could affect other components or plugins through chained attacks, amplifying its impact.

Immediate mitigation steps include restricting access to the WordPress admin interface via IP whitelisting or VPN to limit exposure. Administrators should monitor and audit chat messages for suspicious content and disable or restrict the GeekyBot plugin until a patch is released. Implementing web application firewall (WAF) rules to detect and block malicious script payloads targeting the chat message field can reduce attack surface. Site owners should enforce strict Content Security Policy (CSP) headers to limit script execution sources. Once available, promptly apply official patches or updates from the plugin developer. In the interim, manual code review and modification to sanitize inputs and escape outputs in the plugin’s chat message handling code can mitigate the vulnerability. Regular backups and incident response plans should be updated to prepare for potential exploitation. Educating administrators about the risks of clicking unknown chat messages and encouraging the use of multi-factor authentication (MFA) for admin accounts will further reduce risk.