CVE-2026-39365

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can be parsed as valid source map JSON. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/vitejs/vite/security/advisories/GHSA-4w7w-66w2-5vf9	Exploit Vendor Advisory

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 : 2026-07-24 21:10

NVD link : CVE-2026-39365

Mitre link : CVE-2026-39365

CVE.ORG link : CVE-2026-39365

JSON object : View

Products Affected

vitejs

vite

voidzero

vite\+

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

{"id": "CVE-2026-39365", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39365", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-04-09T18:10:42.839064Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "vitejs", "product": "vite", "versions": [{"status": "affected", "version": ">= 8.0.0, < 8.0.5"}, {"status": "affected", "version": ">= 7.0.0, < 7.3.2"}, {"status": "affected", "version": ">= 6.0.0, < 6.4.2"}]}, {"vendor": "vitejs", "product": "vite-plus", "versions": [{"status": "affected", "version": "< 0.1.16"}]}]}], "published": "2026-04-07T20:16:30.350", "references": [{"url": "https://github.com/vitejs/vite/security/advisories/GHSA-4w7w-66w2-5vf9", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "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, the dev server\u2019s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can be parsed as valid source map JSON. 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, el manejo del servidor de desarrollo (dev server) de las solicitudes .map para dependencias optimizadas resuelve rutas de archivo y llama a readFile sin restringir los segmentos ../ en la URL. Como resultado, es posible eludir la lista de permitidos (allow list) server.fs.strict y recuperar archivos .map ubicados fuera de la ra\u00edz del proyecto, siempre que puedan ser analizados como JSON de mapa de origen (source map) v\u00e1lido. Esta vulnerabilidad se corrige en las versiones 6.4.2, 7.3.2 y 8.0.5."}], "lastModified": "2026-07-24T21:10:00.143", "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"}