CVE intelligence and bounded remediation

CVE-2023-1911 — Creativethemes Blocksy Companion security vulnerability

Medium CVSS 4.3

The Blocksy Companion WordPress plugin before 1.8.82 does not ensure that posts to be accessed via a shortcode are already public and can be viewed, allowing any authenticated users, such as subscriber to access draft posts for example

Severity
Medium
CVSS
4.3 (3.1)
Published
2023-05-02
CISA KEV
Not currently listed
Ecosystem
php/wordpress
Weaknesses
CWE-639

Affected products

  • creativethemes / blocksy_companion

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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