CVE-2021-47888

HIGH

Textpattern <4.8.3 - Authenticated RCE

Title source: llm

Description

Textpattern versions prior to 4.8.3 contain an authenticated remote code execution vulnerability that allows logged-in users to upload malicious PHP files. Attackers can upload a PHP file with a shell command execution payload and execute arbitrary commands by accessing the uploaded file through a specific URL parameter.

Exploits (1)

exploitdb WORKING POC

by Ricardo Ruiz · pythonwebappsphp

https://www.exploit-db.com/exploits/49620

View Code ZIP pw:eip

References (4)

[Various Sources] https://textpattern.com/start

[Various Sources] https://textpattern.com/

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/49620

[Third Party Advisory] https://www.vulncheck.com/advisories/textpattern-remote-code-execution

Scores

CVSS v3 8.8

EPSS 0.0052

EPSS Percentile 67.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-434

Status published

Published Jan 23, 2026

Tracked Since Feb 18, 2026