CVE-2022-3070 is a medium-severity Cross-Site Scripting (XSS) vulnerability identified in the WordPress plugin 'Generate PDF using Contact Form 7' prior to version 3.6. This plugin integrates PDF generation capabilities with the popular Contact Form 7 plugin. The vulnerability arises because the plugin fails to properly sanitize and escape its settings inputs, allowing high-privilege users, such as administrators, to inject malicious scripts. Notably, this XSS can be exploited even when the WordPress capability 'unfiltered_html' is disabled, which normally restricts users from posting unfiltered HTML content. The vulnerability requires high privilege (admin level) and user interaction, as an attacker must have access to the admin interface to exploit it. The CVSS 3.1 score is 4.8 (medium), reflecting limited confidentiality and integrity impact, no availability impact, network attack vector, low attack complexity, and requirement for privileges and user interaction. The vulnerability can lead to script execution in the context of the admin user, potentially allowing session hijacking, privilege escalation, or further attacks within the WordPress admin environment. No known exploits in the wild have been reported, and no official patches or updates are linked in the provided data, but upgrading to version 3.6 or later is implied to mitigate the issue. This vulnerability is classified under CWE-79, which covers improper neutralization of input leading to XSS.

For European organizations using WordPress sites with the 'Generate PDF using Contact Form 7' plugin, this vulnerability poses a risk primarily to the confidentiality and integrity of the administrative environment. Successful exploitation could allow an attacker with admin access to execute arbitrary scripts, potentially leading to session hijacking, unauthorized actions, or further compromise of the website. This could result in data leakage, defacement, or unauthorized modification of site content. Given the requirement for high privileges, the threat is more relevant in scenarios where multiple administrators or privileged users have access, or where credential compromise has already occurred. The impact on availability is minimal. European organizations in sectors with strict data protection regulations (e.g., GDPR) could face compliance risks if the vulnerability leads to data breaches. Additionally, organizations relying on Contact Form 7 and this PDF generation plugin for customer interactions or document generation may experience operational disruptions or reputational damage if exploited.

1. Immediate upgrade: Ensure that the 'Generate PDF using Contact Form 7' plugin is updated to version 3.6 or later where the vulnerability is fixed. 2. Access control review: Limit the number of users with administrative privileges to reduce the risk of exploitation. 3. Monitor admin activity: Implement logging and monitoring of administrative actions to detect suspicious behavior. 4. Harden WordPress security: Use security plugins that can detect and block XSS attempts and enforce Content Security Policy (CSP) headers to mitigate script injection impacts. 5. Regular vulnerability scanning: Incorporate plugin vulnerability checks into routine security assessments to identify outdated or vulnerable plugins. 6. Backup and recovery: Maintain regular backups of WordPress sites to enable quick restoration in case of compromise. 7. Educate administrators: Train admin users on security best practices to avoid social engineering or inadvertent exploitation.