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CVE-2026-33874

Authenticator vulnerable to Remote Code Execution

Gematik Authenticator securely authenticates users for login to digital health applications. Starting in version 4.12.0 and prior to version 4.16.0, the Mac OS version of the Authenticator is vulnerable to remote code execution, triggered when victims open a malicious file. Update the gematik Authenticator to version 4.16.0 or greater to receive a patch. There are no known workarounds.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Apple Gematik
Products
Macos App-authenticator Authenticator
CVE-2026-33875

Authenticator Vulnerable to Authentication Flow Hijack

Gematik Authenticator securely authenticates users for login to digital health applications. Versions prior to 4.16.0 are vulnerable to authentication flow hijacking, potentially allowing attackers to authenticate with the identities of victim users who click on a malicious deep link. Update Gematik Authenticator to version 4.16.0 or greater to receive a patch. There are no known workarounds.

CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Gematik
Products
App-authenticator Authenticator
CVE-2024-46984

XML External Entity Reference (XXE) vulnerability can lead to a Server Side Request Forgery attack in gematik app-referencevalidator

The reference validator is a tool to perform advanced validation of FHIR resources for TI applications and interoperability standards. The profile location routine in the referencevalidator commons package is vulnerable to `XML External Entities` attack due to insecure defaults of the used Woodstox WstxInputFactory. A malicious XML resource can lead to network requests issued by referencevalidator and thus to a `Server Side Request Forgery` attack. The vulnerability impacts applications which use referencevalidator to process XML resources from untrusted sources. The problem has been patched with the 2.5.1 version of the referencevalidator. Users are strongly recommended to update to this version or a more recent one. A pre-processing or manual analysis of input XML resources on existence of DTD definitions or external entities can mitigate the problem.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Gematik
Products
App-referencevalidator Reference Validator