A user could create a docx or odt file with a # in the filename with confidential information such as a credit card number and have it not be marked as confidential.

{
                    "defaultStatus": "unaffected",
                    "vendor": "Nextcloud",
                    "product": "Files Confidential",
                    "versions": [
                        {
                            "version": "3.3.0",
                            "status": "affected",
                            "lessThanOrEqual": "5.0.0",
                            "versionType": "semver"
                        }
                    ]
                }