Epa4all-Client (< 1.2.2)

A man-in-the-middle attacker within the TI network can exploit CVE-2026-45575 in com.oviva.telematik:epa4all-client versions prior to 1.2.2 to substitute a forged discovery document and capture signed authentication material.

The epa4all-client library before version 1.2.2 is vulnerable to a TLS certificate validation issue, allowing a man-in-the-middle attacker to intercept SOAP traffic and sensitive patient data by presenting a malicious TLS certificate.