CVE-2026-3173 Details
Description
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.
A vulnerability allowing Insecure Direct Object Reference (IDOR) has been identified in the Meta Field Block plugin for WordPress, affecting all versions through 1.5.1. The vulnerability arises because the plugin permits users to input arbitrary object IDs and types via block attributes without verifying if the user has the necessary permissions to access the object's metadata. This flaw enables authenticated attackers with Contributor-level access or higher to read user meta, post meta, and term meta data from any object in the database. On sites using plugins that store sensitive information in meta fields, such as WooCommerce, this could result in the exposure of Personally Identifiable Information (PII) like names, email addresses, phone numbers, and physical addresses.
Users are advised to update the Meta Field Block plugin to version 1.5.2 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 28, 2026CISA-ADP
Assessed May 28, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Meta Field Block | <= 1.5.1 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 28, 2026 | New CVE Received | [email protected] |