CVE-2026-66441 HIGH

CVE-2026-66441: WordPress MultiVendorX plugin <= 5.0.10 - Broken Access Control vulnerability

Vendor Multivendorx

Product MultiVendorX

Weakness CWE-862 · Missing authorization

Published August 13, 2026

Last update August 13, 2026

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

Unauthenticated Broken Access Control in MultiVendorX <= 5.0.10 versions.

Explanation of Vulnerability in Simple Terms

02Summary

MultiVendorX versions up to 5.0.10 lack proper authorization checks, allowing unauthenticated attackers to read sensitive data without authentication. The vulnerability affects the application's access control mechanism, exposing confidential information to anyone with network access. No user interaction is required to exploit this flaw.

What an attacker can do

03Attacker Capabilities

Read sensitive data from the application without authentication.

Potential impact on your site

04Site Impact

Confidential data may be exposed to unauthorized users without any warning or audit trail.

Conditions required to exploit

05Prerequisites

Network access to the application; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 13, 2026 CVE published

August 13, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-66441 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

Related vulnerabilities