An issue was discovered in pfSense through 2.4.4-p3. widgets/widgets/picture.widget.php uses the widgetkey parameter directly without sanitization (e.g., a basename call) for a pathname to file_get_contents or file_put_contents.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-16915.json"