CVE-2021-47888
Textpattern 4.8.3 - Remote code execution
- State
- Published
- Severity
- 8.7 High
- Published
- Jan 23, 2026
- Updated
- Mar 5, 2026
- Reserved
- Jan 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products
| Product | Versions |
|---|---|
TextpatternThe Textpattern Development Team |
|
References
- ExploitDB-49620exploit
- Official Vendor Homepageproduct
- Textpattern Software Download Pageproduct
- VulnCheck Advisory: Textpattern 4.8.3 - Remote code executionthird-party-advisory
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