CVE-2026-90848: Governikus Ausweisapp

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A weakness has been identified in Governikus AusweisApp up to 2.5.4. Affected is an unknown function of the component StartPAOSResponse Handler. Executing a manipulation of the argument ResultMessage can lead to cross site scripting. The attack can be launched remotely. Upgrading to version 2.5.5 is able to address this issue. It is recommended to upgrade the affected component. This CVE was requested by the vendor.

Affected products

• Governikus Ausweisapp: version 2.5.0 only; version 2.5.1 only; version 2.5.2 only; version 2.5.3 only; version 2.5.4 only

Published 2026-09-15. Last modified 2026-09-16.