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  4. CVE 2026 66589 wordpress b2bking plugin 5230 broken access
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Back to active CVEs
Medium · CVSS 5.4CVE-2026-66589

WordPress B2BKing plugin <= 5.2.30 - Broken Access Control vulnerability

Answer in brief

CVE-2026-66589 records a Medium severity (CVSS 5.4) vulnerability in WordPress B2BKing plugin <= 5.2.30 - Broken Access Control vulnerability. The current sources do not mark it as known exploited. The current feed maps Kings Plugins/B2BKing (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 18, 2026Updated Aug 21, 2026Source checked Oct 3, 2026First seen by HOL Aug 18, 2026Material review Aug 21, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.4
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Kings Plugins/B2BKing (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Kings Plugins/B2BKinggenericn/aNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Kings Plugins/B2BKing.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • Source referencepatchstack.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WPCafe <= 3.0.19 - Missing Authorization to Unauthenticated Arbitrary Email Notification Flow Read/Create/Update/DeleteAlso CWE-862
  • Mailchimp for WooCommerce < 6.3 - Unauthenticated Abandoned Cart Modification and DeletionAlso CWE-862
  • Nelio Content <= 4.5.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Reusable Message Deletion via 'id' ParameterAlso CWE-862
  • WP Ultimate Review <= 2.4.3 - Unauthenticated Arbitrary Shortcode Execution via 'xs_reviw_summery' Parameter (Split-Shortcode / Late-Registered Shortcode)Same generic ecosystem
  • WP Ultimate Review < 2.4.4 - Author+ Stored XSS via Review Overview SettingsSame generic ecosystem
  • MPG < 4.2.3 - Editor+ Arbitrary File Read via Project ImportSame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-862
Source
CVE List V5
Source checked
Oct 3, 2026
References
1 linked source
Open source record