{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45575","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-12T19:00:14.600Z","datePublished":"2026-05-26T21:01:51.745Z","dateUpdated":"2026-05-28T14:11:30.565Z"},"containers":{"cna":{"title":"epa4all-client: Improper Verification of Cryptographic Signature","problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-gqx7-6552-67hf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-gqx7-6552-67hf"},{"name":"https://github.com/oviva-ag/epa4all-client/pull/36","tags":["x_refsource_MISC"],"url":"https://github.com/oviva-ag/epa4all-client/pull/36"}],"affected":[{"vendor":"oviva-ag","product":"epa4all-client","versions":[{"version":"< 1.2.2","status":"affected"}]},{"vendor":"com.oviva.telematik","product":"epa4all-client","versions":[{"version":"< 1.2.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-26T21:01:51.745Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-gqx7-6552-67hf","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-28T14:11:18.105155Z","id":"CVE-2026-45575","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-28T14:11:30.565Z"}}]}}