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.

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History

Mon, 26 Jan 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Textpattern
Textpattern textpattern
Vendors & Products Textpattern
Textpattern textpattern

Fri, 23 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 23 Jan 2026 17:00:00 +0000

Type Values Removed Values Added
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.
Title Textpattern 4.8.3 - Remote code execution
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-23T21:49:56.478Z

Reserved: 2026-01-18T12:35:05.173Z

Link: CVE-2021-47888

cve-icon Vulnrichment

Updated: 2026-01-23T21:08:34.145Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-23T17:15:51.930

Modified: 2026-01-26T15:03:33.357

Link: CVE-2021-47888

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-26T11:52:54Z

Weaknesses