YaySMTP <= 2.7.7 - Authenticated (Subscriber+) Arbitrary File Upload via Attachment Filename Extension

{
                    "vendor": "yaycommerce",
                    "product": "YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThanOrEqual": "2.7.7",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }