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Vulnerability record · CVE-2026-45574 · published 26 May 2026

CVE-2026-45574: Improper certificate validation vulnerability

epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, 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. This vulnerability is fixed in 1.2.2.

8.1 CVSS 3.1 High EPSS 0.19% · top 92.3% CWE-295 · Improper certificate validation Deferred
8.1CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
24 Jul 2026Last modified by NVD

Description

epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, 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. This vulnerability is fixed in 1.2.2.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

LinkTags
https://github.com/oviva-ag/epa4all-client/pull/36
https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-5hhf-xmfx-4vvr

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Source: NIST National Vulnerability Database (record CVE-2026-45574), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.