CVE-2026-58480 — Vulnerability intelligence

Creative Themes — Blocksy Companion

Published: 2026-07-08T13:05:02.727Z

CVSS

9.2

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

Blocksy Companion Pro plugin for WordPress before 2.1.47 contains an unauthenticated arbitrary file upload vulnerability that allows attackers to upload executable files by bypassing extension validation in the save_attachments function exposed through the Advanced Reviews feature. Attackers can exploit the Custom Fonts extension's flawed strpos() substring check by uploading double-extension filenames such as shell.woff2.php, causing the validation to pass on the substring match while the web server executes the file as PHP, achieving remote code execution.

Sources

• CVE-2026-58480
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• CVE-2026-58480