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CVE

CWE

Training

CVE-2021-47888

Published: Jan 23, 2026

Modified: Mar 5, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

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.

Vendor	Product	Versions
The Textpattern Development Team	Textpattern	affected `4.8.3`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

ExploitDB-49620

exploit

Official Vendor Homepage

product

Textpattern Software Download Page

product

VulnCheck Advisory: Textpattern 4.8.3 - Remote code execution

third-party-advisory

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