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CVE-2026-127120 Governikus AusweisApp Mobile StartPAOSResponse cross site scripting

5.3 mediumEPSS 0.3%

Medium (5.3) in governikus ausweisapp mobile. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
A vulnerability was found in Governikus AusweisApp Mobile up to 2.5.5. This impacts an unknown function of the component StartPAOSResponse Handler. Performing a manipulation of the argument ResultMessage results in cross site scripting. The attack can be initiated remotely. Upgrading to version 2.6.0 will fix this issue. Upgrading the affected component is advised. This CVE was requested by the vendor.

Severity

CVSS 4.0

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

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 26th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWEs
CWE-79 Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)
CWE-94 Improper Control of Generation of Code (Code Injection)
OWASP Top 10
A05:2025 Injection
Published
Modified
Assigned by
VulDB (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Affected

  • governikus:ausweisapp mobile

Versions

From the CNA's record in the CVE List.

ProductAffected
Governikus AusweisApp Mobile2.5.0
Governikus AusweisApp Mobile2.5.1
Governikus AusweisApp Mobile2.5.2
Governikus AusweisApp Mobile2.5.3
Governikus AusweisApp Mobile2.5.4
Governikus AusweisApp Mobile2.5.5

Attack patterns (CAPEC)

  • CAPEC-35 Leverage Executable Code in Non-Executable Files Likelihood: High · Severity: Very High
  • CAPEC-77 Manipulating User-Controlled Variables Likelihood: High · Severity: Very High
  • CAPEC-242 Code Injection Likelihood: High · Severity: High
  • CAPEC-63 Cross-Site Scripting (XSS) Likelihood: High · Severity: Very High
  • CAPEC-85 AJAX Footprinting Likelihood: High · Severity: Low
  • CAPEC-209 XSS Using MIME Type Mismatch Severity: Medium
  • CAPEC-588 DOM-Based XSS Likelihood: High · Severity: Very High
  • CAPEC-591 Reflected XSS Likelihood: High · Severity: Very High
  • CAPEC-592 Stored XSS Likelihood: High · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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