CVE-2026-50576

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{"affected": [{"affectedData": [{"product": "ePA3-Service-OpenSource", "vendor": "fbeta-GmbH", "versions": [{"status": "affected", "version": "< 1.3.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration does not neutralize CRLF characters in values used by app/vau/VAUProtokoll.py to construct VAU inner HTTP requests. The build_inner_header function interpolates the uri, host, accept_type, content_type, content_length, USER_AGENT, and insurant_id values into request lines and headers, including x-useragent and x-insurantid. An authenticated attacker who controls a value can inject additional headers into the inner request. Depending on ePA server handling, an injected x-insurantid header can expose another patient's records, and injected Authorization headers can bypass the intended authentication or authorization context. Session-derived USER_AGENT input can also poison requests across the session. This issue is fixed in version 1.3.0."}, {"lang": "es", "value": "La Integraci\u00f3n de ePA 3.x implementa el flujo de trabajo de autorizaci\u00f3n y escribe Objetos de Informaci\u00f3n M\u00e9dica en el historial electr\u00f3nico del paciente de Alemania. Antes de la versi\u00f3n 1.3.0, la Integraci\u00f3n de ePA 3.x no neutraliza los caracteres CRLF en los valores utilizados por app/vau/VAUProtokoll.py para construir solicitudes HTTP internas de VAU. La funci\u00f3n build_inner_header interpola los valores uri, host, accept_type, content_type, content_length, USER_AGENT e insurant_id en l\u00edneas de solicitud y encabezados, incluyendo x-useragent y x-insurantid. Un atacante autenticado que controla un valor puede inyectar encabezados adicionales en la solicitud interna. Dependiendo del manejo del servidor de ePA, un encabezado x-insurantid inyectado puede exponer los registros de otro paciente, y los encabezados Authorization inyectados pueden eludir el contexto de autenticaci\u00f3n o autorizaci\u00f3n previsto. La entrada USER_AGENT derivada de la sesi\u00f3n tambi\u00e9n puede envenenar solicitudes a trav\u00e9s de la sesi\u00f3n. Este problema est\u00e1 solucionado en la versi\u00f3n 1.3.0."}], "id": "CVE-2026-50576", "lastModified": "2026-10-22T22:10:00.250", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50576", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T19:07:38.144792Z", "version": "2.0.3"}}]}, "published": "2026-08-18T17:16:58.633", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/commit/b984d15d261423302de337adae25e84c54e9c2d1"}, {"source": "security-advisories@github.com", "url": "https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/pull/11"}, {"source": "security-advisories@github.com", "url": "https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/releases/tag/1.3.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/security/advisories/GHSA-j8jg-7fqf-4xx9"}, {"source": "security-advisories@github.com", "url": "https://www.machinespirits.de/advisory/013a60"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-113"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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