CVE-2026-90848 | BDVDB-2026-374389 Detail

GovernikusAusweisApp

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94 Improper Control of Generation of Code ('Code Injection')

References#

Exploit#

No public exploit known

History#

Version 12026-09-15Record published in the CVE List.
Version 22026-10-26Most recent update recorded in the CVE List.

Published

Published: 2026-09-15
Last modified: 2026-10-26

Vendor information

Vendor: Governikus
Product: AusweisApp

All Governikus vulnerabilities

Score

4.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 41.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Cross-Site Scripting

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
2.5.0
Fixed
Not stated
Vulnerable
2.5.1
Fixed
Not stated
Vulnerable
2.5.2
Fixed
Not stated
Vulnerable
2.5.3
Fixed
Not stated
Vulnerable
2.5.4
Fixed
Not stated
Vulnerable
Not stated
Fixed
2.5.5

Scoring System

CVSS v4.0

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	Passive
Vulnerable System Confidentiality	None
Vulnerable System Integrity	Low
Vulnerable System Availability	None
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

4.3 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	None

CVSS v3.0

4.3 Medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	None

CVSS v2

5.0 Medium

AV:N/AC:L/Au:N/C:N/I:P/A:N/E:ND/RL:OF/RC:C

Metric breakdown
Access Vector	Network
Access Complexity	Low
Authentication	None
Confidentiality Impact	None
Integrity Impact	Partial
Availability Impact	None

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).