CVE-2025-8083 is a Prototype Pollution vulnerability categorized under CWE-1321 that affects the Vuetify UI framework, specifically versions from 2.2.0-beta.2 up to 3.0.0-alpha.10. The vulnerability stems from the internal 'mergeDeep' utility function used to merge user-defined Preset configurations with default options. This function does not properly sanitize or control the merging process, allowing an attacker to craft malicious presets that inject or overwrite properties on JavaScript's Object prototype. Because JavaScript objects inherit from this prototype, pollution here affects all objects globally within the application context. The consequences include unpredictable application behavior, potential escalation to denial of service via resource exhaustion, and unauthorized access or manipulation of data. Applications employing Server-Side Rendering (SSR) are at heightened risk since the polluted prototype affects the entire server process, potentially compromising all users and data handled by that server. The vulnerability is notable because Vuetify 2.x is End-of-Life, meaning no official patches will be released, leaving many applications exposed unless they upgrade to Vuetify 3.x or implement alternative mitigations. The CVSS 3.1 score of 8.6 reflects the vulnerability's high impact and ease of exploitation, requiring no privileges or user interaction and exploitable remotely over the network. Although no active exploits have been reported yet, the risk remains significant due to the widespread use of Vuetify in web applications.

For European organizations, this vulnerability poses a substantial risk, especially for those using Vuetify 2.x in web applications with SSR. The ability to perform prototype pollution can lead to denial of service through resource exhaustion, disrupting critical services and causing downtime. Unauthorized data access or manipulation could result in data breaches, violating GDPR and other data protection regulations, potentially leading to legal and financial penalties. The widespread use of JavaScript frameworks like Vuetify in enterprise and public sector applications across Europe means that many organizations could be affected. SSR applications, common in performance-sensitive or SEO-focused deployments, are particularly vulnerable, increasing the risk of server-wide compromise. The lack of patches for Vuetify 2.x forces organizations to consider costly upgrades or complex mitigations, impacting operational continuity and security posture.

European organizations should prioritize upgrading to Vuetify 3.x or later versions where this vulnerability is addressed. If upgrading is not immediately feasible due to compatibility or resource constraints, organizations should implement strict input validation and sanitization on any user-supplied Preset configurations to prevent malicious payloads. Employing runtime application self-protection (RASP) or web application firewalls (WAFs) with rules targeting prototype pollution patterns can help detect and block exploitation attempts. For SSR deployments, isolating server processes and employing containerization or sandboxing can limit the blast radius of potential exploitation. Regular code audits focusing on object merging utilities and dependency management should be conducted. Monitoring for unusual application behavior or resource usage spikes can provide early indicators of exploitation attempts. Finally, organizations should maintain an inventory of Vuetify versions in use and develop a migration plan to supported versions to ensure long-term security.