🛡️ CVE-2026-45574 — epa4all-client

🟠 CVSS 8.1 — High ✅ No Known Exploit CWE-295 NVD
8.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

epa4all-client: TLS Certificate Validation Disabled in Production

Impact

An attacker on the network path between the ePA service and the Konnektor can present any TLS certificate (self-signed, expired, wrong CN) and intercept all SOAP traffic. This includes patient identifiers (KVNR), SMC-B card operations (authentication, signing),

document content, and credential exchanges.

Patches

[#36](https://github.com/oviva-ag/epa4all-client/pull/36)

Workarounds

Use the library directly instead of the REST wrapper.

Resources

  • MS-OVIVA-EPA4ALL-771a78

Credits

[Machine Spirits](https://machinespirits.com/) ([[email protected]](mailto:[email protected]))

  • Dr. rer. nat. Simon Weber
  • Dipl.-Inf. Volker Schönefeld
  • Chiara Fliegner

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability none.

Weakness class

CVE-2026-45574 is classified as CWE-295: Improper Certificate Validation. A TLS certificate is accepted without proper verification, so a man-in-the-middle can present their own.

Affected software

CVE-2026-45574 is recorded against 2 packages.

  • com.oviva.telematik:epa4all-client (fixed in 1.2.2)
  • unknown

Timeline and source

Published on 15 May 2026 and last revised on 8 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)

Details

Severity HIGH
CVSS Score 8.1
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE CWE-295
Public Exploit ✅ No
Source NVD
Published 2026-05-15
Updated 2026-08-12
Modified 2026-06-08
Fix URL N/A

Affected Packages

Software From version Fixed in
com.oviva.telematik:epa4all-client 1.2.2
unknown

Similar Threats

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