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CVE-2026-6252

MEDIUM 6.4 CVSS 3.1
Published
May 14, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

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.

Affected WordPress components

  • Meta Field Block – Display Custom Fields for ACF, Meta Box and More Plugin · display-a-meta-field-as-block
    Confirmed match Active
    Up to and including 1.5.2
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • mr2p Meta Field Block – Display custom fields in the Block Editor without coding — Up to and including 1.5.2

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3517519/display-a-meta-field-as-block/tags/1.5.3/includes/helper-functions.php
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/e6a70210-39bb-44a2-b71a-6f014691a21c?source=cve
  • nvd.nist.gov Official NVD record