Tatsu < 3.3.12 - Unauthenticated RCE

Summary

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.

Timeline

1. Apr 25, 2022, 3:50 PM UTCCVE published
2. Apr 18, 2025Public exploit on Exploit-DB

   EDB-52260

3. Apr 21, 2025, 3:04 PM UTCRecord last updated
4. Oct 28, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• Unknown Tatsu

  From 3.3.12 · fixed in 3.3.12

References 10