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Vulnerability · Published May 26, 2026 · Assigned by GitHub_M

CVE-2026-45574epa4all-client: TLS Certificate Validation Disabled in Production

High 8.1

In plain English

A high-severity improper certificate validation in epa4all-client from com.oviva.telematik. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.1%top 96.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavencom.oviva.telematik:epa4all-client1.2.2GHSA-5hhf-xmfx-4vvr

Affected products (as reported)

VendorProductVersions
oviva-ag epa4all-client < 1.2.2
com.oviva.telematik epa4all-client < 1.2.2

Weakness: CWE-295 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References