high7.4
CVE-2026-45575
epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur.
Impact
epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, an attacker who can MITM the TLS connection between the client and the IDP (within the TI network) can substitute a forged discovery document. The forged document redirects uri_puk_idp_enc and uri_puk_idp_sig to attacker-controlled URLs. The client then encrypts the SMC-B-signed challenge response to the attacker's encryption key and POSTs it to the attacker's auth endpoint. This captures the signed authentication material. This vulnerability is fixed in 1.2.2.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | com.oviva.telematik:epa4all-client | < 1.2.2 | 1.2.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-gqx7-6552-67hf
- https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-gqx7-6552-67hf
- https://github.com/oviva-ag/epa4all-client/pull/36
- https://github.com/oviva-ag/epa4all-client/commit/9111d6fbb939007036a7f74b2a93bb278cb5af32
- https://github.com/oviva-ag/epa4all-client/releases/tag/v1.2.2
- https://nvd.nist.gov/vuln/detail/CVE-2026-45575