{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "epa4all-client",
          "vendor": "oviva-ag",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.2"
            }
          ]
        },
        {
          "product": "epa4all-client",
          "vendor": "com.oviva.telematik",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.2"
            }
          ]
        }
      ],
      "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\u0027s encryption key and POSTs it to the attacker\u0027s auth endpoint. This captures the signed authentication material. This vulnerability is fixed in 1.2.2."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-26T21:01:51.745Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "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"
        }
      ],
      "source": {
        "advisory": "GHSA-gqx7-6552-67hf",
        "discovery": "UNKNOWN"
      },
      "title": "epa4all-client: Improper Verification of Cryptographic Signature"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45575",
    "datePublished": "2026-05-26T21:01:51.745Z",
    "dateReserved": "2026-05-12T19:00:14.600Z",
    "dateUpdated": "2026-05-26T21:01:51.745Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}