CVE Catalog

CVE-2026-86783

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

9th percentile - higher than 9% of all known CVEs

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. This allows unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.

Risk Assessment

An unauthenticated attacker can learn the site's data structure, including custom field names of posts that should not be public. This facilitates further attacks and may expose business-sensitive information.

Recommendation

Update the Post Grid Gutenberg Blocks plugin to version 5.0.41 or later. Consider restricting REST API access for unauthenticated users if not required.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS