High severity8.8NVD Advisory· Published May 10, 2026· Updated May 12, 2026

CVE-2021-47943

Description

TextPattern CMS 4.8.7 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands by uploading malicious PHP files through the file upload functionality. Attackers can upload a PHP shell via the Files section in the content area and execute commands by accessing the uploaded file at /textpattern/files/ with GET parameters passed to the system function.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Textpattern/Textpatternllm-fuzzy
Range: = 4.8.7

Patches

Vulnerability mechanics

References

www.exploit-db.com/exploits/49996nvd
www.exploit-db.com/exploits/50415nvd
www.vulncheck.com/advisories/textpattern-cms-remote-code-execution-via-file-uploadnvd

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