RCE in Governikus Ausweisapp
CVE-2026-90848
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Governikus Ausweisapp — versions 2.5.0, 2.5.1, 2.5.2
Weakness classification (CWE)
References
- vuldb.com/vuln/403403 (technical-description, vdb-entry)
- vuldb.com/vuln/403403/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-90848 (third-party-advisory)
- vuldb.com/submit/925923 (third-party-advisory)
- www.Governikus.de/loesungen/kundenprojekte/AusweisApp/ (patch)
- turingpoint.de/en/advisories/tp-2026-113/ (related)
Frequently asked questions
- What is CVE-2026-90848?
- CVE-2026-90848 is a medium-severity vulnerability in Governikus Ausweisapp, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-09-15.
- How severe is CVE-2026-90848?
- Medium severity. CVSS v3 base score is 4.3 out of 10.