title: Vite Server Options (server.fs.deny) can be bypassed using double forward-slash (//)
description: Vite provides frontend tooling. Prior to versions 2.9.16, 3.2.7, 4.0.5, 4.1.5, 4.2.3, and 4.3.9, Vite Server Options (`server.fs.deny`) can be bypassed using double forward-slash (//) allows any unauthenticated user to read file from the Vite root-path of the application including the default `fs.deny` settings (`['.env', '.env.*', '*.{crt,pem}']`). Only users explicitly exposing the Vite dev server to the network (using `--host` or `server.host` config option) are affected, and only files in the immediate Vite project root folder could be exposed. This issue is fixed in vite@4.3.9, vite@4.2.3, vite@4.1.5, vite@4.0.5, vite@3.2.7, and vite@2.9.16.
problem types: CWE-50: Path Equivalence: '//multiple/leading/slash'
affected:
{
vendor: vitejs
product: vite
versions:
version: < 2.9.16, status: affected
version: >= 3.0.2, < 3.2.7, status: affected
version: >= 4.0.0, < 4.0.5, status: affected
version: >= 4.1.0, < 4.1.5, status: affected
version: >= 4.2.0, < 4.2.3, status: affected
version: >= 4.3.0, < 4.3.9, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
version: 3.1
]