CVE-2021-25094
By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 83.2%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 83.23% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 18 April 2025
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- brandexponents/tatsu
- Source
- contact@wpscan.com
EPSS 83.2% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.