What’s Vulnerable › Vulnerabilities

CVE-2021-47943: TextPattern CMS 4.8.7 Remote Code Execution via File Upload

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-10 · updated 2026-07-25
• Weakness: CWE-434

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.

Affected products

• TextPattern CMS: 4.8.7

References

• https://www.exploit-db.com/exploits/49996
• https://www.exploit-db.com/exploits/50415
• https://www.vulncheck.com/advisories/textpattern-cms-remote-code-execution-via-file-upload

Get alerted when CVE-2021-47943 or the next vulnerability affects your stack