5.3
Medium
CVE-2026-86783 The Post Grid Gutenberg Blocks WordPress plugin before 5.0.41 does not perform an authorization or post-visibility…
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Post Grid Gutenberg Blocks 5.0 | earliest → < 5.0.41 | 5.0.41 |