CVE-2025-13381 is a vulnerability classified under CWE-862 (Missing Authorization) found in the AI ChatBot with ChatGPT and Content Generator by AYS WordPress plugin, versions up to and including 2.7.0. The issue arises because the 'ays_chatgpt_save_wp_media' function lacks a capability check to verify whether the user has the necessary permissions to upload media files. This omission allows unauthenticated attackers to invoke this function remotely and upload arbitrary media content to the WordPress site. While the vulnerability does not grant direct access to sensitive data or system control, it undermines the integrity of the website by permitting unauthorized content injection, which could be leveraged for further attacks such as hosting malicious files, phishing, or defacement. The CVSS 3.1 base score is 5.3 (medium), reflecting that the attack vector is network-based, requires no privileges or user interaction, and impacts integrity without affecting confidentiality or availability. No known exploits have been reported in the wild, and no official patches have been published at the time of disclosure. The vulnerability affects all versions of the plugin, which is used to integrate AI chatbot and content generation capabilities into WordPress sites, potentially exposing a wide range of websites that rely on this plugin for enhanced user interaction and content creation.

For European organizations, this vulnerability poses a risk primarily to the integrity of their web content and digital assets. Unauthorized media uploads could be used to distribute malicious payloads, conduct phishing campaigns, or deface websites, damaging brand reputation and user trust. Public-facing WordPress sites that utilize this plugin are particularly vulnerable, including e-commerce platforms, corporate websites, and digital service portals. Although the vulnerability does not directly compromise confidentiality or availability, the ability to upload arbitrary files could be a stepping stone for more advanced attacks, such as malware hosting or lateral movement within the network if combined with other vulnerabilities. Compliance with European data protection regulations (e.g., GDPR) could be impacted if the unauthorized uploads lead to data breaches or service disruptions. The medium severity indicates a moderate but tangible risk that requires timely attention to prevent exploitation.

European organizations should immediately audit their WordPress installations to identify the presence of the AI ChatBot with ChatGPT and Content Generator by AYS plugin. Until an official patch is released, administrators should consider disabling or uninstalling the plugin to eliminate the attack surface. If disabling is not feasible, implement custom access controls by modifying the plugin code to add proper capability checks on the 'ays_chatgpt_save_wp_media' function, ensuring only authorized users can upload media. Additionally, employ Web Application Firewalls (WAF) with rules to detect and block unauthorized media upload attempts targeting this function. Monitor web server logs for unusual POST requests to the plugin endpoints and set up alerts for suspicious activity. Regularly update WordPress core and all plugins to the latest versions once patches become available. Educate web administrators on the risks of unauthorized media uploads and enforce the principle of least privilege for user roles managing content. Finally, conduct periodic security assessments and penetration tests focusing on plugin vulnerabilities to proactively identify similar issues.