CVE-2024-8046 is a stored cross-site scripting vulnerability classified under CWE-79, found in the WordPress plugin 'Logo Showcase Ultimate – Logo Carousel, Logo Slider & Logo Grid' developed by wpwax. The vulnerability affects all versions up to and including 1.4.1. It stems from improper neutralization of input during web page generation, specifically related to SVG file uploads. Authenticated users with Author-level access or higher can upload SVG files containing malicious JavaScript code that is not properly sanitized or escaped by the plugin. When other users view pages containing these SVG files, the embedded scripts execute in their browsers, potentially leading to session hijacking, privilege escalation, or redirection to malicious websites. The vulnerability has a CVSS v3.1 score of 6.4, indicating medium severity, with an attack vector over the network, low attack complexity, privileges required at the Author level, no user interaction needed, and a scope change due to affecting other users. No known public exploits have been reported yet, but the risk is significant for multi-author WordPress sites using this plugin. The root cause is insufficient input validation and output escaping of SVG content, a common vector for XSS attacks due to SVG's XML-based format allowing embedded scripts. The vulnerability highlights the need for strict sanitization of user-uploaded files and cautious handling of SVGs in web applications. Currently, no official patch links are provided, so users must monitor vendor updates or apply temporary mitigations.

The impact of CVE-2024-8046 is primarily on the confidentiality and integrity of affected WordPress sites and their users. Successful exploitation allows an authenticated Author-level user to inject persistent malicious scripts that execute in the browsers of other users viewing the SVG content. This can lead to session hijacking, theft of sensitive information, unauthorized actions performed on behalf of users, or redirection to phishing or malware sites. The vulnerability does not directly affect availability but can undermine trust in the affected website. Organizations with multiple authors or contributors are at higher risk, as the attack requires at least Author-level privileges. The scope of impact extends to all visitors or users who access pages containing the malicious SVGs, potentially including site administrators and customers. Given WordPress's widespread use globally and the popularity of plugins for logo display, many websites could be exposed, especially those that allow SVG uploads without additional controls. The medium CVSS score reflects the balance between the required privileges and the significant consequences of exploitation.

To mitigate CVE-2024-8046, organizations should implement the following specific measures: 1) Immediately restrict or disable SVG file uploads in the affected plugin until a patch is available, as SVGs are a common vector for XSS attacks. 2) Enforce strict input validation and sanitization on all uploaded SVG files, using libraries designed to remove scripts and dangerous content from SVGs. 3) Apply output escaping when rendering SVG content on web pages to prevent script execution. 4) Limit user roles and permissions carefully, ensuring only trusted users have Author-level or higher access. 5) Monitor website logs for unusual upload activity or script injection attempts. 6) Keep the WordPress core, themes, and all plugins up to date, and apply vendor patches promptly once released. 7) Consider implementing Content Security Policy (CSP) headers to restrict script execution sources. 8) Educate site administrators and content creators about the risks of uploading untrusted SVG files. These targeted actions go beyond generic advice by focusing on the SVG upload vector and role-based access control specific to this vulnerability.