CVE-2026-2276 is a reflected Cross-Site Scripting (XSS) vulnerability categorized under CWE-79, found in the Wix web application platform. The vulnerability resides in the endpoint https://manage.wix.com/account/account-settings, which handles SVG image uploads. The issue arises because the application does not properly sanitize SVG files before storing and rendering them. SVG files can embed JavaScript code, and an attacker with authenticated access can upload a crafted SVG containing malicious scripts. When other users view the affected SVG image, the embedded JavaScript executes in their browser context, allowing the attacker to perform actions such as stealing session cookies, capturing sensitive information, or performing unauthorized operations on behalf of the victim. The vulnerability affects all versions of the Wix web application, indicating a systemic issue in input validation and content sanitization. The CVSS 4.0 score is 5.3 (medium severity), reflecting that the attack vector is network-based, requires low privileges (authenticated user), no user interaction, and has limited confidentiality and integrity impact. No patches or fixes are currently linked, and no known exploits have been reported in the wild. The vulnerability's exploitation requires the attacker to have an authenticated account on the Wix platform, which may limit the attack surface but still poses a significant risk, especially for organizations relying on Wix for web presence. The lack of user interaction means that once the malicious SVG is uploaded and viewed, the attack executes automatically. This vulnerability highlights the importance of strict input validation and sanitization, especially for file uploads that can contain executable content like SVGs.

For European organizations using Wix as their web hosting or content management platform, this vulnerability poses a risk of client-side code execution leading to session hijacking, data leakage, or unauthorized actions performed by attackers impersonating legitimate users. This can compromise the confidentiality and integrity of user data and potentially damage organizational reputation. Since the vulnerability requires authenticated access to upload malicious SVGs, insider threats or compromised accounts could be leveraged. The automatic execution of malicious scripts upon viewing the SVG increases the risk of widespread impact if the compromised images are publicly accessible or shared internally. Organizations in sectors with sensitive data or regulatory compliance requirements (e.g., finance, healthcare, government) may face increased risk and potential legal consequences if exploited. The medium severity rating suggests moderate impact, but the ease of exploitation without user interaction and the widespread use of Wix in Europe amplify the threat. Additionally, attackers could use this vulnerability as a foothold for further attacks such as phishing or lateral movement within networks.

1. Immediately audit all SVG upload functionalities and implement strict sanitization to remove or neutralize embedded scripts within SVG files. 2. Restrict allowed file types and consider disabling SVG uploads if not essential. 3. Implement Content Security Policy (CSP) headers to limit the execution of inline scripts and reduce XSS impact. 4. Enforce strong authentication and monitor for suspicious account activities to detect potential misuse of authenticated accounts. 5. Educate users and administrators about the risks of uploading untrusted SVG content. 6. Regularly review and update web application security configurations and apply any vendor patches or updates once available. 7. Use web application firewalls (WAFs) with rules targeting malicious SVG payloads and XSS patterns. 8. Conduct penetration testing focusing on file upload vectors to identify similar vulnerabilities. 9. Monitor logs for unusual access patterns to the SVG upload endpoint and image views. 10. Coordinate with Wix support or security teams to obtain official patches or guidance.