Tatsu <= 3.3.12 - Unauthenticated Remote Code Execution

Unrestricted Upload of File with Dangerous Type
CVE CVE-2021-25094
CVSS Medium (6.5)
Publicly Published March 28, 2022
Last Updated January 22, 2024
Researcher Vincent MICHEL
Description

The Tatsu WordPress plugin before 3.3.13 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.

References

1 affected software package

Software Type Plugin
Software Slug tatsu (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 3.3.12
Patched Version
  • 3.3.13
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.