CVE-2025-12181: Contentstudio

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The ContentStudio plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the cstu_update_post() function in all versions up to, and including, 1.3.7. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. CVE-2025-67910 is likely a duplicate of this.

Affected products

• Contentstudio Contentstudio: up to and including 1.3.7

Published 2025-12-05. Last modified 2026-06-17.