CVE-2026-66651

WordPress MultiVendorX plugin <= 5.0.20 - Broken Access Control vulnerability

6.5 Medium

Missing Authorization vulnerability in MultiVendorX MultiVendorX dc-woocommerce-multi-vendor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MultiVendorX: from n/a through 5.0.20.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.27%Up 0.1 points since Aug 19, 2026

What each source reports

CVE List Score used 6.5

WordPress MultiVendorX plugin <= 5.0.20 - Broken Access Control vulnerability

Record: CVE-2026-66651
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-862
Updated: 2026-11-02

EUVDEUVD-2026-60931 6.5

Record: EUVD-2026-60931
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fx55-rw83-58r5 6.5

Unauthenticated Broken Access Control in MultiVendorX <= 5.0.14 versions.

Unauthenticated Broken Access Control in MultiVendorX <= 5.0.14 versions.

Record: GHSA-fx55-rw83-58r5
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-862
Updated: 2026-11-02

NVD 6.5

Record: CVE-2026-66651
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-862
Updated: 2026-11-02

Affected products

multivendorx

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-66651 is a medium vulnerability (CVSS 6.5) in Multivendorx, published August 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 18th percentile. No source names a fixed version.