CVE-2026-3568
MStore API <= 4.18.3 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary User Meta Update
Description
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.
INFO
Published Date :
April 9, 2026, 4:16 a.m.
Last Modified :
July 24, 2026, 9:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the MStore API plugin to the latest version.
- Apply vendor patches if updating is not possible.
- Remove or disable the plugin if not in use.
Public PoC/Exploit Available at Github
CVE-2026-3568 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-3568.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-3568 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-3568
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python Shell PHP HTML
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3568 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-3568 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: plugin The MStore API para WordPress, Description: El plugin MStore API para WordPress es vulnerable a Referencia Directa a Objeto Insegura en todas las versiones hasta la 4.18.3, inclusive. Esto se debe a que la función update_user_profile() en controllers/flutter-user.php procesa el parámetro JSON 'meta_data' sin ninguna lista blanca, lista negra o validación de claves meta. La función lee JSON sin procesar de php://input (línea 1012), lo decodifica (línea 1013), autentica al usuario mediante validación de cookie (línea 1015), y luego itera directamente sobre el array meta_data proporcionado por el usuario pasando claves y valores arbitrarios a update_user_meta() (línea 1080) sin saneamiento ni restricciones. Esto hace posible que atacantes autenticados, con acceso de nivel Suscriptor y superior, modifiquen campos meta de usuario arbitrarios en sus propias cuentas, incluyendo campos sensibles como wp_user_level (para escalar a comprobaciones heredadas de nivel de administrador), indicadores de autorización específicos del plugin (por ejemplo, _wpuf_user_active, aiowps_account_status), y campos de facturación/perfil con valores no saneados (lo que podría habilitar XSS Almacenado en contextos de administrador). Tenga en cuenta que wp_capabilities no puede ser explotado directamente de esta manera porque requiere un valor de array serializado, pero wp_user_level (un entero simple) y numerosas claves meta específicas del plugin son explotables. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'inspireui', 'product': 'MStore API – Create Native Android & iOS Apps On The Cloud', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.18.3'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-3568', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-09T12:59:03.231688Z'} -
New CVE Received by [email protected]
Apr. 09, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-639 Added Reference https://plugins.trac.wordpress.org/browser/mstore-api/tags/4.18.3/controllers/flutter-user.php#L1012 Added Reference https://plugins.trac.wordpress.org/browser/mstore-api/tags/4.18.3/controllers/flutter-user.php#L1078 Added Reference https://plugins.trac.wordpress.org/browser/mstore-api/tags/4.18.3/controllers/flutter-user.php#L1080 Added Reference https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L1012 Added Reference https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L1078 Added Reference https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L1080 Added Reference https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3494266%40mstore-api&new=3494266%40mstore-api&sfp_email=&sfph_mail= Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/a77bc126-4dbd-4a26-b98c-946341d4282f?source=cve