| Title | Governikus GmbH & Co. KG AusweisApp (Desktop) 2.5.4 Cross Site Scripting |
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| Description | This vulnerability is submitted by Governikus the vendor and maintainer of the AusweisApp. See: https://www.governikus.de/loesungen/kundenprojekte/ausweisapp/
The Governikus AusweisApp (Desktop) versions 1.10.0 through 2.5.4 contain a cross-site scripting vulnerability (CWE-79) in the processing of the ResultMessage contained in a StartPAOSResponse. An attacker can provide an activation link referencing a malicious eID-Server that returns a crafted ResultMessage. The value is inserted into HTML output without proper escaping of HTML metacharacters, allowing attacker-controlled script code to be executed in the user's browser. The vulnerability is fixed in version 2.5.5 by properly escaping HTML metacharacters before rendering the ResultMessage.
CVSS 4.0 Score: 5.1 - https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N |
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| User | governikus (UID 100539) |
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| Submission | 08/12/2026 16:55 (1 month ago) |
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| Moderation | 09/14/2026 07:26 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 403403 [Governikus AusweisApp up to 2.5.4 StartPAOSResponse ResultMessage cross site scripting] |
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| Points | 17 |
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