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Ausweisapp CVE-2026-90848

| EUVDEUVD-2026-78245 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-09-15 VulDB GHSA-492q-f4p6-w72v
5.3
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) PRIMARY
5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 15, 2026 - 10:42 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Cross-site scripting in Governikus AusweisApp through version 2.5.4 lets a remote attacker plant script through the ResultMessage argument handled by the StartPAOSResponse component, so that attacker-influenced content is rendered instead of plain result text. The flaw is network-reachable with no privileges required, but the user must be engaged in an eID flow before the malicious response is processed. …

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CVE-2026-90848 vulnerability details – vuln.today

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