---
id: CVE-2026-86783
title: >-
  The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not
  perform an authorization or post-visibility check on a REST API route that
  returns the custom field keys of a given post, allowing unauthenticated users
  to disclose …
summary: >-
  The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not
  perform an authorization or post-visibility check on a REST API route that
  returns the custom field keys of a given post, allowing unauthenticated users
  to disclose …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-200
product: Post Grid Gutenberg Blocks
affected:
  - post_grid_gutenberg_blocks < 5.0.41
published: '2026-09-23'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:13:31.210'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86783'
references:
  - url: 'https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00206
epssPercentile: 0.09405
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-23T10:39:47.271809Z'
ingestedAt: '2026-09-23T06:17:57.894Z'
---

## Overview

The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.