CVE-2023-7088 is a medium severity Cross-Site Scripting (XSS) vulnerability identified in the WordPress plugin 'Add SVG Support for Media Uploader | inventivo' up to version 1.0.5. This plugin enables users to upload SVG files to the WordPress media library, but it fails to properly sanitize the uploaded SVG content. SVG files can contain embedded scripts or malicious payloads, and without proper sanitization, these can be executed in the context of the WordPress site. The vulnerability allows users with at least Author-level privileges to upload crafted SVG files containing XSS payloads. When such a malicious SVG is viewed or processed by administrators or other users with higher privileges, the embedded script can execute, potentially leading to session hijacking, privilege escalation, or other malicious actions. The CVSS 3.1 base score is 5.4 (medium), reflecting that the attack vector is network-based, requires low attack complexity, but does require privileges (Author role) and user interaction (viewing the SVG). The scope is changed, indicating that the vulnerability affects resources beyond the initially compromised component. No known exploits are reported in the wild yet, and no patches are currently linked, indicating that mitigation may require manual intervention or plugin updates once available. The vulnerability is classified under CWE-79, which covers improper neutralization of input leading to XSS attacks. This vulnerability is significant because SVG files are commonly used for scalable graphics on websites, and WordPress is a widely used CMS, making this a potentially impactful vector if exploited.

For European organizations using WordPress sites with the 'Add SVG Support for Media Uploader | inventivo' plugin, this vulnerability poses a risk of client-side code execution via XSS. Attackers with Author-level access—often content creators or contributors—could upload malicious SVGs that execute scripts in the browsers of administrators or other users who view the media library or SVG content. This could lead to session hijacking, unauthorized actions on the site, data theft, or further compromise of the WordPress installation. Given the widespread use of WordPress in Europe across various sectors including government, education, and commerce, exploitation could disrupt operations, damage reputation, and lead to data breaches. The requirement for Author-level privileges limits the attack surface to insiders or compromised accounts but does not require full administrative access, which increases risk. The vulnerability does not directly impact availability but threatens confidentiality and integrity of the affected sites. Organizations with multi-user WordPress environments and less stringent role management are particularly at risk. The lack of a patch means organizations must rely on temporary mitigations, increasing exposure time.

European organizations should immediately audit their WordPress installations to identify if the 'Add SVG Support for Media Uploader | inventivo' plugin is installed and in use. If present, restrict upload permissions to trusted users only, ideally limiting SVG uploads to administrators until a patch is available. Implement strict role management to ensure that only highly trusted users have Author or higher roles. Disable SVG uploads entirely if not necessary. Use Web Application Firewalls (WAFs) with rules to detect and block malicious SVG payloads or suspicious uploads. Monitor logs for unusual upload activity or access patterns. Educate content creators about the risks of uploading untrusted SVG files. Consider using alternative plugins that sanitize SVG content properly or employ server-side SVG sanitization tools to clean files before upload. Stay alert for official patches or updates from the plugin developer and apply them promptly once released. Additionally, ensure WordPress core and other plugins are up to date to reduce overall attack surface.