An issue was discovered in FileChucker 4.99e-free-e02. filechucker.cgi has a filter bypass that allows a malicious user to upload any type of file by using % characters within the extension, e.g., file.%ph%p becomes file.php.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7216
Reference (s):
- https://encodable.com/filechucker/changelog/
- https://github.com/ekultek/cve-2019-7216