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6.4
BlockArt Blocks plugin for WordPress allows malicious script injection
CVE-2026-3498
Summary
The BlockArt Blocks plugin for WordPress is not properly filtering user input, which can allow attackers to inject malicious scripts into pages. This means that authorized users with administrative access can potentially inject scripts that will run when other users view those pages. You should update the plugin to the latest version, at least 2.2.16, to fix this issue.
Original title
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 in...
Original description
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.
nvd CVSS3.1
6.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
- https://plugins.trac.wordpress.org/browser/blockart-blocks/tags/2.2.15/includes/...
- https://plugins.trac.wordpress.org/browser/blockart-blocks/tags/2.2.15/includes/...
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fblockart-blocks/tags/2....
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7d0cb432-785a-4f38-830...
Published: 11 Apr 2026 · Updated: 11 Apr 2026 · First seen: 11 Apr 2026