CVE-2021-47888

Textpattern 4.8.3 - Remote code execution

CVSS 8.7 HIGHEPSS 0.6%CWE-434

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

The Textpattern Development Team · Textpattern

References

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