A XML External Entity (XXE) vulnerability has been identified in Easy Tax Client Software 2023 1.2 and earlier across multiple platforms, including Windows, Linux, and macOS.CreditsManuel Kiesel (cyllective AG)Referenceshttps://www.ag.ch/de/verwaltung/dfr/steuern/natuerliche-personen/steuererklaerung-easytax
