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    6 vulnerabilities by medplum

    CVE-2026-53728 (GCVE-0-2026-53728)

    Vulnerability from nvd – Published: 2026-09-03 19:04 – Updated: 2026-09-03 19:04
    VLAI
    Title
    Medplum - Improper Validation of Redirect URI in External Auth Callback allows Authorization Code Leakage
    Summary
    Medplum is a developer platform that enables development of healthcare apps. Prior to version 5.1.6, the external identity provider callback at GET /auth/external accepts attacker-controlled redirect URIs that only need to start with a registered client redirect URI, rather than matching exactly. After a successful external IdP login, the server appends Medplum login and code values to that attacker-supplied URL and issues a redirect. Because the external login request state is serialized as raw JSON and later trusted by the callback, an attacker who can tamper with state.redirectUri can cause Medplum to redirect authorization artifacts to an attacker-controlled endpoint. When the registered redirect URI is a bare origin or another prefix that can be extended into a different hostname, this becomes a cross-origin authorization code leak. This issue has been patched in version 5.1.6.
    CWE
    • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
    • CWE-345 - Insufficient Verification of Data Authenticity
    Impacted products
    Vendor Product Version
    medplum medplum Affected: < 5.1.6
    Create a notification for this product.
    Show details on NVD website

    {
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            }
          ],
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                "attackVector": "NETWORK",
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                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
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                "userInteraction": "REQUIRED",
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              }
            }
          ],
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            {
              "descriptions": [
                {
                  "cweId": "CWE-601",
                  "description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
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                }
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            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-345",
                  "description": "CWE-345: Insufficient Verification of Data Authenticity",
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            },
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              "name": "https://github.com/medplum/medplum/pull/8749",
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            },
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          },
          "title": "Medplum - Improper Validation of Redirect URI in External Auth Callback allows Authorization Code Leakage"
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    CVE-2026-44506 (GCVE-0-2026-44506)

    Vulnerability from nvd – Published: 2026-09-03 19:04 – Updated: 2026-09-04 13:41
    VLAI
    Title
    Medplum - Exposure of OAuth client secret via dynamic registration endpoint in self-hosted configurations
    Summary
    Medplum is a developer platform that enables development of healthcare apps. In Medplum versions 4.1.10 through 5.1.6, the /oauth2/register endpoint could return the client_secret of preconfigured OAuth clients defined via the defaultOAuthClients server configuration when a matching redirect_uri was provided. This issue has been patched in version 5.1.7.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-04 13:28 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    References
    Impacted products
    Vendor Product Version
    medplum medplum Affected: >= 4.1.10, < 5.1.7
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-49120 (GCVE-0-2026-49120)

    Vulnerability from nvd – Published: 2026-06-02 18:05 – Updated: 2026-07-14 21:33 X_Open Source
    VLAI
    Title
    Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint
    Summary
    Medplum before 5.1.14 contains a server-side request forgery vulnerability in the subscription worker that allows authenticated users to perform unauthorized internal network requests by creating FHIR Subscription resources with arbitrary endpoint URLs. Attackers can point subscription endpoints at internal addresses such as cloud instance metadata services, internal databases, or container orchestration endpoints to exfiltrate IAM credentials and patient health records via the POST body containing full FHIR resource payloads.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-03 13:19 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Impacted products
    Vendor Product Version
    medplum medplum Affected: 0 , < 5.1.14 (semver)
    Create a notification for this product.
    Date Public
    2026-05-28 00:00
    Show details on NVD website

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    CVE-2026-44506 (GCVE-0-2026-44506)

    Vulnerability from cvelistv5 – Published: 2026-09-03 19:04 – Updated: 2026-09-04 13:41
    VLAI
    Title
    Medplum - Exposure of OAuth client secret via dynamic registration endpoint in self-hosted configurations
    Summary
    Medplum is a developer platform that enables development of healthcare apps. In Medplum versions 4.1.10 through 5.1.6, the /oauth2/register endpoint could return the client_secret of preconfigured OAuth clients defined via the defaultOAuthClients server configuration when a matching redirect_uri was provided. This issue has been patched in version 5.1.7.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-04 13:28 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    References
    Impacted products
    Vendor Product Version
    medplum medplum Affected: >= 4.1.10, < 5.1.7
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-53728 (GCVE-0-2026-53728)

    Vulnerability from cvelistv5 – Published: 2026-09-03 19:04 – Updated: 2026-09-03 19:04
    VLAI
    Title
    Medplum - Improper Validation of Redirect URI in External Auth Callback allows Authorization Code Leakage
    Summary
    Medplum is a developer platform that enables development of healthcare apps. Prior to version 5.1.6, the external identity provider callback at GET /auth/external accepts attacker-controlled redirect URIs that only need to start with a registered client redirect URI, rather than matching exactly. After a successful external IdP login, the server appends Medplum login and code values to that attacker-supplied URL and issues a redirect. Because the external login request state is serialized as raw JSON and later trusted by the callback, an attacker who can tamper with state.redirectUri can cause Medplum to redirect authorization artifacts to an attacker-controlled endpoint. When the registered redirect URI is a bare origin or another prefix that can be extended into a different hostname, this becomes a cross-origin authorization code leak. This issue has been patched in version 5.1.6.
    CWE
    • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
    • CWE-345 - Insufficient Verification of Data Authenticity
    Impacted products
    Vendor Product Version
    medplum medplum Affected: < 5.1.6
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-49120 (GCVE-0-2026-49120)

    Vulnerability from cvelistv5 – Published: 2026-06-02 18:05 – Updated: 2026-07-14 21:33 X_Open Source
    VLAI
    Title
    Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint
    Summary
    Medplum before 5.1.14 contains a server-side request forgery vulnerability in the subscription worker that allows authenticated users to perform unauthorized internal network requests by creating FHIR Subscription resources with arbitrary endpoint URLs. Attackers can point subscription endpoints at internal addresses such as cloud instance metadata services, internal databases, or container orchestration endpoints to exfiltrate IAM credentials and patient health records via the POST body containing full FHIR resource payloads.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-03 13:19 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Impacted products
    Vendor Product Version
    medplum medplum Affected: 0 , < 5.1.14 (semver)
    Create a notification for this product.
    Date Public
    2026-05-28 00:00
    Show details on NVD website

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