Blocksy Companion, CVE-2026-12430

CVE, Research URL: CVE-2026-12430
Home page URL: Security reports for Blocksy Companion
Application: Blocksy Companion
Published on: Jun 19, 2026
Research Description: 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.
Affected versions: max 2.1.46.
Status: vulnerable