MultiVendorX Plugin up to 5.0.21 VisitorMap stores access control

Summaryinfo

A vulnerability was found in MultiVendorX Plugin up to 5.0.21 and classified as problematic. The affected element is an unknown function of the file /wp-json/multivendorx/v1/stores of the component VisitorMap Handler. Executing a manipulation can lead to access control. This vulnerability is tracked as CVE-2026-127211. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in MultiVendorX Plugin up to 5.0.21. It has been declared as problematic. This vulnerability affects an unknown code of the file /wp-json/multivendorx/v1/stores of the component VisitorMap Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality. CVE summarizes:

MultiVendorX plugin for WordPress before 5.0.22 contains a broken access control vulnerability in the /wp-json/multivendorx/v1/stores REST route that allows authenticated vendors to access administrative flag handlers due to the store_owner role possessing the edit_stores capability and missing per-store ownership checks. Attackers can exploit the insecure direct object reference in the visitorMap handler and other flag handlers to retrieve other stores' contact emails, pending withdrawal amounts, onboarding and registration data, deactivation reasons, and visitor analytics, resulting in a cross-tenant confidentiality breach.

The advisory is shared for download at wordpress.org. This vulnerability was named CVE-2026-127211 since 11/12/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 5.0.22 eliminates this vulnerability.

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Productinfo

Name

• MultiVendorX Plugin

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.0.11
• 5.0.12
• 5.0.13
• 5.0.14
• 5.0.15
• 5.0.16
• 5.0.17
• 5.0.18
• 5.0.19
• 5.0.20
• 5.0.21

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