CVE-2021-25094

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.

• CWE-306
• CWE-306

• http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
• https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/Exploit, Third Party Advisory
• https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcdExploit, Third Party Advisory
• http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
• https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/Exploit, Third Party Advisory
• https://packetstorm.news/files/id/190566/
• https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcdExploit, Third Party Advisory
• https://www.exploit-db.com/exploits/52260

Published

Apr 25, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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