CVE-2026-12430

MediumCVSS 4.4

Published: 19/06/2026(UTC)Updated: 22/06/2026(UTC)Translated: 23/06/2026(UTC)NVD NIST

Summary

The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to and including 2.1.45 due to insufficient input sanitization and output escaping.

Risk Assessment

Authenticated attackers with editor-level permissions and above can inject arbitrary web scripts that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Recommendation

It is recommended to update the plugin to the latest version and review security settings to minimize the risk of XSS attacks.

Original NVD description (English source)

The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.1.45 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.