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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.

PUBLISHED Reserved 2026-03-24 | Published 2026-03-27 | Updated 2026-04-03 | Assigner GitHub_M




CRITICAL: 9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Problem types

CWE-940: Improper Verification of Source of a Communication Channel

Product status

< 4.16.0
affected

References

www.machinespirits.com/advisory/f41e56/

github.com/...icator/security/advisories/GHSA-qg87-cf56-2rmr

cve.org (CVE-2026-33875)

nvd.nist.gov (CVE-2026-33875)

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