Vulnerability · Published May 14, 2026 · Assigned by Wordfence

CVE-2026-6252Meta Field Block <= 1.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tagName' Block Attribute

Medium 6.4

In plain English

A medium-severity cross-site scripting in Meta Field Block – Display custom fields in the Block Editor without coding from mr2p. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.2%top 95.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 products (as reported)

Vendor	Product	Versions
mr2p	Meta Field Block – Display custom fields in the Block Editor without coding	0 – through 1.5.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References