CVE-2025-31125: 
JavaScript vulnerability analysis and mitigation

Vite, a frontend tooling framework for JavaScript, has been found to contain a security vulnerability (CVE-2025-31125) that allows unauthorized access to non-allowed files. The vulnerability affects applications that explicitly expose the Vite dev server to the network through the --host or server.host config option. The issue was discovered and disclosed on March 31, 2025, affecting multiple versions of Vite including versions 6.2.0-6.2.3, 6.1.0-6.1.2, 6.0.0-6.0.12, 5.0.0-5.4.15, and versions prior to 4.5.11 (GitHub Advisory).

The vulnerability allows attackers to bypass path restrictions and access arbitrary files using two methods: base64 encoded content of non-allowed files can be exposed using ?inline&import query parameters, and content of non-allowed files can be exposed using ?raw?import. The vulnerability has been assigned a CVSS v3.1 base score of 5.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N. The issue is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and CWE-284 (Improper Access Control) (GitHub Advisory).

The vulnerability enables attackers to access and read arbitrary files on affected servers, potentially exposing sensitive information. The impact is particularly significant for development servers that are exposed to the network, as it could lead to unauthorized access to confidential data (GBHackers).

The vulnerability has been patched in versions 6.2.4, 6.1.3, 6.0.13, 5.4.16, and 4.5.11. Users are strongly advised to upgrade to these patched versions. If immediate upgrading is not possible, it is recommended to limit access to the Vite development server by implementing network restrictions (GBHackers).