VDB-403403 · Submit #925923 · CVE-2026-90848

Governikus AusweisApp up to 2.5.4 StartPAOSResponse ResultMessage cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.1	$0-$5k	1.31-

Summaryinfo

A vulnerability was found in Governikus AusweisApp up to 2.5.4. It has been rated as problematic. Affected by this vulnerability is an unknown functionality of the component StartPAOSResponse Handler. The manipulation of the argument ResultMessage leads to cross site scripting. This vulnerability is listed as CVE-2026-90848. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised. This CVE was requested by the vendor.

Detailsinfo

A vulnerability was found in Governikus AusweisApp up to 2.5.4 and classified as problematic. This issue affects an unknown function of the component StartPAOSResponse Handler. The manipulation of the argument ResultMessage with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity.

The identification of this vulnerability is CVE-2026-90848. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

This CVE was requested by the vendor.

Upgrading to version 2.5.5 eliminates this vulnerability. The upgrade is hosted for download at Governikus.de.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Governikus

Name

AusweisApp

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: AusweisApp 2.5.5

Timelineinfo

09/14/2026 Advisory disclosed
09/14/2026 +0 days VulDB entry created
09/14/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-90848 (🔒)
GCVE (CVE): GCVE-0-2026-90848
GCVE (VulDB): GCVE-100-403403

Entryinfo

Created: 09/14/2026 07:31
Updated: 09/14/2026 07:33
Changes: 09/14/2026 07:31 (53), 09/14/2026 07:33 (1)
Complete: 🔍
Submitter: governikus
Cache ID: 216::103

Submitinfo

Accepted

Submit #925923: Governikus GmbH & Co. KG AusweisApp (Desktop) 2.5.4 Cross Site Scripting (by governikus)