Vulnerability-Lookup

GHSA-5HHF-XMFX-4VVR

Vulnerability from github – Published: 2026-05-15 18:29 – Updated: 2026-05-15 18:29

Summary

epa4all-client: TLS Certificate Validation Disabled in Production

Details

Impact

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.

Patches

#36

Workarounds

Use the library directly instead of the REST wrapper.

Resources

MS-OVIVA-EPA4ALL-771a78

Credits

Machine Spirits (contact@machinespirits.de)

Dr. rer. nat. Simon Weber
Dipl.-Inf. Volker Schönefeld
Chiara Fliegner

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.oviva.telematik:epa4all-client"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45574"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-15T18:29:31Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nAn 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),\ndocument content, and credential exchanges.\n\n### Patches\n[#36](https://github.com/oviva-ag/epa4all-client/pull/36)\n\n### Workarounds\nUse the library directly instead of the REST wrapper.\n\n### Resources\n- MS-OVIVA-EPA4ALL-771a78\n\n### Credits\n[Machine Spirits](https://machinespirits.com/) ([contact@machinespirits.de](mailto:contact@machinespirits.de))\n\n- Dr. rer. nat. Simon Weber\n- Dipl.-Inf. Volker Sch\u00f6nefeld\n- Chiara Fliegner",
  "id": "GHSA-5hhf-xmfx-4vvr",
  "modified": "2026-05-15T18:29:31Z",
  "published": "2026-05-15T18:29:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-5hhf-xmfx-4vvr"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oviva-ag/epa4all-client/pull/36"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oviva-ag/epa4all-client/commit/9111d6fbb939007036a7f74b2a93bb278cb5af32"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/oviva-ag/epa4all-client"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oviva-ag/epa4all-client/releases/tag/v1.2.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "epa4all-client: TLS Certificate Validation Disabled in Production"
}

CVE-2026-45574 (GCVE-0-2026-45574)

Vulnerability from cvelistv5 – Published: 2026-05-26 21:03 – Updated: 2026-05-27 13:21

Title

epa4all-client: TLS Certificate Validation Disabled in Production

Summary

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.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-295 - Improper Certificate Validation

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/oviva-ag/epa4all-client/securi…	x_refsource_CONFIRM
https://github.com/oviva-ag/epa4all-client/pull/36	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
oviva-ag	epa4all-client	Affected: < 1.2.2
com.oviva.telematik	epa4all-client	Affected: < 1.2.2

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45574",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-27T13:20:59.307934Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-27T13:21:07.023Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-26T21:03:15.152Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-5hhf-xmfx-4vvr",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-5hhf-xmfx-4vvr"
        },
        {
          "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-5hhf-xmfx-4vvr",
        "discovery": "UNKNOWN"
      },
      "title": "epa4all-client: TLS Certificate Validation Disabled in Production"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45574",
    "datePublished": "2026-05-26T21:03:15.152Z",
    "dateReserved": "2026-05-12T19:00:14.600Z",
    "dateUpdated": "2026-05-27T13:21:07.023Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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