CVE-2021-47888

HIGH

Textpattern <4.8.3 - Authenticated RCE

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47888. PoCs published by Ricardo Ruiz.

AI-analyzed exploit summary This exploit targets an authenticated RCE vulnerability in Textpattern CMS versions prior to 4.8.3. It uploads a malicious PHP file via the file upload functionality and executes arbitrary commands through a crafted request.

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

This exploit targets an authenticated RCE vulnerability in Textpattern CMS versions prior to 4.8.3. It uploads a malicious PHP file via the file upload functionality and executes arbitrary commands through a crafted request.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Textpattern CMS < 4.8.3
Auth required
Prerequisites: Valid credentials for Textpattern CMS · Network access to the target · File upload functionality enabled
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49620
Various Sources product
https://textpattern.com/
Various Sources product
https://textpattern.com/start

Scores

CVSS v3 8.8
EPSS 0.0060
EPSS Percentile 44.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-434
Status published
Published Jan 23, 2026
Tracked Since Feb 18, 2026