# CVE-2026-66589 — Kings Plugins B2BKing

> As of 2026-08-18, CVE-2026-66589 is a MEDIUM-severity vulnerability in Kings Plugins B2BKing, CVSS v3.1 5.4, EPSS 0.1% (3.6th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-66589 as of 2026-08-18; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-18

## What is CVE-2026-66589?

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.

The record classifies CVE-2026-66589 under weakness class [CWE-862](https://intel.threadlinqs.com/cwe/CWE-862). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 48 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.4 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 3.6% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-18

## Is CVE-2026-66589 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Kings Plugins**: B2BKing

## How to fix CVE-2026-66589

No vendor patch reference has been recorded for CVE-2026-66589 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-66589

No threat campaign in the Threadlinqs corpus currently references CVE-2026-66589, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-08-19. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vulnerability database entry**

- [patchstack.com — vdb entry](https://patchstack.com/database/wordpress/plugin/b2bking-wholesale-for-woocommerce/vulnerability/wordpress-b2bking-plugin-5-2-30-broken-access-control-vulnerability?_s_id=cve)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-66589
Full detection coverage and IOCs for threats exploiting CVE-2026-66589 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp