CVE-2026-3173 json
Meta Field Block <= 1.5.1 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary User Meta Exposure
published 2026-05-28 5 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-32722
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- mr2p Meta Field Block – Display custom fields in the Block Editor without coding
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/247df9e2-0a63-49ad-86fa-cb4c6e62c4cf?source=cve
- plugins.trac.wordpress.org /browser/display-a-meta-field-as-block/trunk/meta-field-block.php#L206
- plugins.trac.wordpress.org /browser/display-a-meta-field-as-block/trunk/meta-field-block.php#L328
- plugins.trac.wordpress.org /changeset/3472303/
Sources
- CVE List CVE-2026-3173
- NVD CVE-2026-3173
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