CVE-2026-90848

MEDIUM 4.3

Governikus AusweisApp StartPAOSResponse cross site scripting

CVSS Score

4.3

EPSS Score

0.4%

EPSS Percentile

39th

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.

CWE	CWE-79 CWE-94
Vendor	governikus
Product	ausweisapp
Published	Sep 15, 2026
Last Updated	Oct 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Governikus / AusweisApp

2.5.0 2.5.1 2.5.2 2.5.3 2.5.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403403 vuldb.com: https://vuldb.com/vuln/403403/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90848 vuldb.com: https://vuldb.com/submit/925923 turingpoint.de: https://turingpoint.de/en/advisories/tp-2026-113/ governikus.de: https://www.Governikus.de/loesungen/kundenprojekte/AusweisApp/

Credits

Jan Kahmen (turingpoint GmbH) 🔍 governikus (VulDB User) jankahmen (VulDB User) VulDB CNA Team