CVE-2021-47888

HIGH EPSS 44.3%

Published Jan 23, 20265mo ago · Modified Jun 17, 20261w ago

8.7 CVSS 4.0

High

Published Jan 23, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

8.7

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

44.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

References 4

textpattern.com https://textpattern.com/
textpattern.com https://textpattern.com/start
exploit-db.com https://www.exploit-db.com/exploits/49620
vulncheck.com https://www.vulncheck.com/advisories/textpattern-remote-code-execution

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.