PT-2026-44188 · Mr2P · Meta Field Block – Display Custom Fields In The Block Editor Without Coding

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-3173

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

The Meta Field Block plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.5.1. This is due to the plugin allowing users to specify arbitrary object IDs and object types via block attributes without validating whether the authenticated user has permission to access the requested object's metadata. This makes it possible for authenticated attackers, with Contributor-level access and above, to read arbitrary user meta, post meta, and term meta data from any object in the database. On sites using plugins that store sensitive data in meta fields (e.g., WooCommerce billing/shipping information), this could lead to the exposure of Personally Identifiable Information (PII) including names, email addresses, phone numbers, and physical addresses.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-3173

Affected Products

Meta Field Block – Display Custom Fields In The Block Editor Without Coding

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-3173 · Security Note
• https://plugins.trac.wordpress.org/changeset/3472303 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/247df9e2-0a63-49ad-86fa-cb4c6e62c4cf?source=cve · Note
• https://plugins.trac.wordpress.org/browser/display-a-meta-field-as-block/trunk/meta-field-block.php#L328 · Note
• https://plugins.trac.wordpress.org/browser/display-a-meta-field-as-block/trunk/meta-field-block.php#L206 · Note