PT-2026-32086 · Wpblockart · Blockart Blocks – Gutenberg Blocks

Athiwat Tiprasaharn + 1 · Published 2026-04-11 · Updated 2026-04-11 · CVE-2026-3498

Mitre

CVSS v3.1

6.4

Medium

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

The BlockArt Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'clientId' block attribute in all versions up to, and including, 2.2.15. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-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-2026-3498

Affected Products

Blockart Blocks – Gutenberg Blocks

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-3498 · Security Note
• https://plugins.trac.wordpress.org/browser/blockart-blocks/tags/2.2.15/includes/BlockTypes/PostTemplate.php#L67 · Note
• https://plugins.trac.wordpress.org/browser/blockart-blocks/tags/2.2.15/includes/BlockTypes/QueryLoop.php#L43 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/7d0cb432-785a-4f38-830f-72b95e65aa5a?source=cve · Note
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fblockart-blocks/tags/2.2.15&new_path=%2Fblockart-blocks/tags/2.3.0 · Note