PT-2026-40889 · Mr2P · Meta Field Block – Display Custom Fields In The Block Editor Without Coding

Published 2026-05-14 · Updated 2026-05-14 · CVE-2026-6252

NVD

CVSS v3.1

6.4

Medium

Base vector

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

The Meta Field Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tagName' block attribute in all versions up to, and including, 1.5.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-6252

Affected Products

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

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-6252 · Security Note
• https://plugins.trac.wordpress.org/changeset/3517519/display-a-meta-field-as-block/tags/1.5.3/includes/helper-functions.php · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/e6a70210-39bb-44a2-b71a-6f014691a21c?source=cve · Note