CVE-2025-24360 in Nuxt
Summary
by MITRE • 01/25/2025
Nuxt is an open-source web development framework for Vue.js. Starting in version 3.8.1 and prior to version 3.15.3, Nuxt allows any websites to send any requests to the development server and read the response due to default CORS settings. Users with the default server.cors option using Vite builder may get the source code stolen by malicious websites. Version 3.15.3 fixes the vulnerability.
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Analysis
by VulDB Data Team • 02/08/2025
The vulnerability identified as CVE-2025-24360 affects the Nuxt.js web development framework, specifically impacting versions 3.8.1 through 3.15.2. This security flaw stems from overly permissive default Cross-Origin Resource Sharing (CORS) configuration within the framework's development server implementation. The issue manifests when developers utilize the Vite builder with the default server.cors option, creating a dangerous exposure that allows any website to send arbitrary requests to the development server and receive responses containing sensitive information. The vulnerability represents a critical misconfiguration that fundamentally undermines the security boundaries typically established by CORS policies.
The technical flaw resides in the default CORS policy implementation where the framework fails to properly restrict cross-origin requests from external domains. When the development server operates with default settings, it accepts requests from any origin without proper validation, effectively disabling the CORS protection mechanisms that should normally prevent unauthorized cross-origin access. This misconfiguration enables malicious actors to exploit the development server by crafting requests that target the Nuxt application's endpoints, potentially accessing internal resources, configuration files, or source code that should remain protected within the development environment. The vulnerability directly maps to CWE-346 known as "Improper Verification of Source of a Communication Channel" and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments, as attackers could potentially harvest sensitive information from exposed development servers.
The operational impact of this vulnerability extends beyond simple information disclosure, as it creates a pathway for attackers to extract source code and potentially sensitive configuration data from development environments. Attackers with knowledge of the development server endpoints can construct malicious websites that automatically send requests to the vulnerable Nuxt server, capturing responses that may contain application logic, database connection strings, API keys, or other sensitive information. This exposure is particularly dangerous in development environments where source code and configuration details are often more accessible and less protected than production systems. The vulnerability affects developers who may not be aware of the security implications of using default configurations, creating a widespread risk across projects that rely on Nuxt's default development server settings.
Organizations and developers should immediately update to Nuxt version 3.15.3 or later to resolve this vulnerability. The recommended mitigation involves not only applying the patch but also implementing proper CORS configuration that explicitly defines allowed origins, methods, and headers for the development server. Security-conscious developers should review their server.cors configurations to ensure they properly restrict cross-origin access and implement additional security layers such as authentication checks for development endpoints. The vulnerability highlights the importance of security considerations in development environments, as these systems often receive less scrutiny than production deployments. Additionally, organizations should consider implementing network segmentation and access controls for development servers to limit exposure to external threats and maintain compliance with security standards such as those outlined in ISO 27001 and NIST cybersecurity frameworks.