CVE-2026-6252

MEDIUM

Meta Field Block <= 1.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tagName' Block Attribute

Title source: cna

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.

References (2)

Core 2

Core References

https://www.wordfence.com/threat-intel/vulnerabilities/id/e6a70210-39bb-44a2-b71a-6f014691a21c?source=cve

https://plugins.trac.wordpress.org/changeset/3517519/display-a-meta-field-as-block/tags/1.5.3/includes/helper-functions.php

Scores

CVSS v3 6.4

EPSS 0.0003

EPSS Percentile 8.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

mr2p/Meta Field Block – Display custom fields in the Block Editor without coding < 1.5.2

Published May 14, 2026

Tracked Since May 14, 2026