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OpenAdvisories
Critical · 9.3 CVE-2026-33875 EUVD-2026-16817

Authenticator Vulnerable to Authentication Flow Hijack

Published Mar 27, 2026 · Updated Apr 3, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
gematik app-Authenticator < 4.16.0 —

References