CVE-2026-66441
Received Received - Intake

Unauthenticated Broken Access Control in MultiVendorX

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: Patchstack

Description
Unauthenticated Broken Access Control in MultiVendorX <= 5.0.10 versions.

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Meta Information

Published
2026-08-13
Last Modified
2026-08-13
Generated
2026-08-13
AI Q&A
2026-08-13
EPSS Evaluated
N/A
NVD
CVE-2026-66441
EUVD
EUVD-2026-57867

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
patchstack multivendorx_plugin to 5.0.10 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

CVE-2026-66441 is an unauthenticated broken access control vulnerability in the WordPress MultiVendorX plugin versions 5.0.10 and earlier. It allows unauthenticated users to perform actions requiring higher privileges due to missing authorization checks.

Detection Guidance

Check if the MultiVendorX plugin version is 5.0.10 or earlier. Use WordPress admin panel or run a command like 'wp plugin list' in the WordPress directory to verify the installed version.

Impact Analysis

This vulnerability can lead to unauthorized actions on affected websites, including potential mass-exploit campaigns targeting thousands of sites. Attackers could exploit it to gain elevated privileges without authentication.

Mitigation Strategies

Update the MultiVendorX plugin to version 5.0.11 or later immediately. Apply the Patchstack mitigation rule if updating is not possible right away.

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