CVE-2026-39363

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default "..."). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583	Exploit Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:24761
https://access.redhat.com/errata/RHSA-2026:24762
https://access.redhat.com/errata/RHSA-2026:24866
https://access.redhat.com/errata/RHSA-2026:59153
https://access.redhat.com/security/cve/CVE-2026-39363
https://bugzilla.redhat.com/show_bug.cgi?id=2456179
https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583	Exploit Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39363.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:vitejs:vite::::::node.js::*
	cpe:2.3:a:vitejs:vite::::::node.js::*
	cpe:2.3:a:vitejs:vite::::::node.js::*
	cpe:2.3:a:voidzero:vite\+::::::node.js::*

History

No history.

Information

Published : 2026-04-07 20:16

Updated : 2026-08-25 13:18

NVD link : CVE-2026-39363

Mitre link : CVE-2026-39363

CVE.ORG link : CVE-2026-39363

JSON object : View

Products Affected

vitejs

vite

voidzero

vite\+

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-306

Missing Authentication for Critical Function

CWE-1220

Insufficient Granularity of Access Control

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"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-306"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-1220"}]}], "descriptions": [{"lang": "en", "value": "Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server\u2019s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default \"...\"). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5."}, {"lang": "es", "value": "Vite es un framework de herramientas de frontend para JavaScript. Desde la versi\u00f3n 6.0.0 hasta antes de las versiones 6.4.2, 7.3.2 y 8.0.5, si es posible conectarse al WebSocket del servidor de desarrollo de Vite sin una cabecera Origin, un atacante puede invocar fetchModule a trav\u00e9s del evento WebSocket personalizado vite:invoke y combinar file://... con ?raw (o ?inline) para recuperar el contenido de archivos arbitrarios en el servidor como una cadena de JavaScript (por ejemplo, export default '...'). El control de acceso aplicado en la ruta de solicitud HTTP (como server.fs.allow) no se aplica a esta ruta de ejecuci\u00f3n basada en WebSocket. Esta vulnerabilidad se corrige en las versiones 6.4.2, 7.3.2 y 8.0.5."}], "lastModified": "2026-08-25T13:18:45.007", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vitejs:vite:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "FE1AE8AE-8504-4C45-A361-8EF1F8D573AD", "versionEndIncluding": "6.4.1", "versionStartIncluding": "6.0.0"}, {"criteria": "cpe:2.3:a:vitejs:vite:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "8D4169B2-49CC-4174-B1AB-2D61D3441617", "versionEndIncluding": "7.3.1", "versionStartIncluding": "7.0.0"}, {"criteria": "cpe:2.3:a:vitejs:vite:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "51F8A931-4520-4696-89C4-7F94228654F5", "versionEndIncluding": "8.0.4", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:voidzero:vite\\+:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "6C271AE4-5F12-4689-A8A9-CBCBD3C447DC", "versionEndIncluding": "0.1.15"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}