CVE-2021-25094: Brandexponents Tatsu

High severity, CVSS 8.1. EPSS: 83.4% chance of exploitation in the next 30 days.

The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.

Affected products

• Brandexponents Tatsu: before 3.3.12 (fixed in 3.3.12)

Published 2022-04-25. Last modified 2026-06-17.