CVE-2025-31125: Vite Vite Has A `server.fs.deny` Bypassed Vulnerability
MODERATECVE-2025-31125 is a MODERATE (CVSS 5.3) vite has a `server.fs.deny` bypassed vulnerability (CWE-284: Improper Access Control) affecting Vite libraries in the npm ecosystem. The issue involves vite has a `server.fs.deny` bypassed for `inline` and `raw` with `?import` query. Remediation is available by upgrading affected packages to version 6.1.3, 6.2.4, 6.0.13, 5.4.16, 4.5.11.
CVE-2025-31125 at a Glance
Security Impact
CVSS: 5.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).
How to Fix CVE-2025-31125
To remediate this vulnerability, upgrade all affected Vite dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install vite@6.1.3npm install vite@6.2.4npm install vite@6.0.13npm install vite@5.4.16npm install vite@4.5.11Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls viteHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2025-31125, inspect your project dependencies using npm:
npm ls viteAnalyze the terminal output to locate any version of Vite in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.1.3), your application is affected.
Note: The npm ls vite command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Vite, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-31125 Affected Vite Versions
5 component(s)References
Frequently Asked Questions
What is CVE-2025-31125?
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What version fixes CVE-2025-31125?
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Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-4r4m-qw57-chr8",
"modified" : "2026-01-22T21:47:40Z",
"published" : "2025-03-31T17:31:54Z",
"aliases" : [ "CVE-2025-31125" ],
"summary" : "Vite has a `server.fs.deny` bypassed for `inline` and `raw` with `?import` query",
"details" : "### Summary\n\nThe contents of arbitrary files can be returned to the browser.\n\n### Impact\nOnly apps explicitly exposing the Vite dev server to the network (using `--host` or [`server.host` config option](https://vitejs.dev/config/server-options.html#server-host)) are affected.\n\n### Details\n\n- base64 encoded content of non-allowed files is exposed using `?inline&import` (originally reported as `?import&?inline=1.wasm?init`)\n- content of non-allowed files is exposed using `?raw?import`\n\n`/@fs/` isn't needed to reproduce the issue for files inside the project root.\n\n### PoC\n\nOriginal report (check details above for simplified cases):\n\nThe ?import&?inline=1.wasm?init ending allows attackers to read arbitrary files and returns the file content if it exists. Base64 decoding needs to be performed twice\n```\n$ npm create vite@latest\n$ cd vite-project/\n$ npm install\n$ npm run dev\n```\n\nExample full URL `http://localhost:5173/@fs/C:/windows/win.ini?import&?inline=1.wasm?init`",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "vite"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "6.2.0"
}, {
"fixed" : "6.2.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "vite"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "6.1.0"
}, {
"fixed" : "6.1.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "vite"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "6.0.0"
}, {
"fixed" : "6.0.13"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "vite"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0"
}, {
"fixed" : "5.4.16"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "vite"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.5.11"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/vitejs/vite/security/advisories/GHSA-4r4m-qw57-chr8"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-31125"
}, {
"type" : "WEB",
"url" : "https://github.com/vitejs/vite/commit/59673137c45ac2bcfad1170d954347c1a17ab949"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/vitejs/vite"
}, {
"type" : "WEB",
"url" : "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31125"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200", "CWE-284" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2025-03-31T17:31:54Z",
"nvd_published_at" : "2025-03-31T17:15:43Z"
}
}