WordPress security changelog
MEDIUM CVE-2026-66589 Deferred

B2BKing permits low-privilege access to an undisclosed protected operation

B2BKing through 5.2.30 fails to enforce authorization on an operation reachable by a low-privilege authenticated user. The Patchstack CNA assigns low confidentiality and integrity impact but does not disclose the endpoint or action, parameters, required WordPress role, protected object or resulting read and state change.

CVE / CNA score 5.4 CVSS 3.1 · audit@patchstack.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
B2BKing
Plugin slug
b2bking-wholesale-for-woocommerce
Affected
n/a through 5.2.30
Safe version
5.2.40
Published
Aug 18, 2026
Weakness
CWE-862 — Missing Authorization

This CVE was published Aug 18, 2026 and is one of 2 known issues for this plugin.

Update, patch or deactivate.

Update B2BKing to 5.2.40 or later and audit activity by low-privilege accounts for unexpected access or changes.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

Missing Authorization vulnerability in Kings Plugins B2BKing allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects B2BKing: from n/a through 5.2.30.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Primary and upstream sources