CVE-2026-33875
Authenticator Vulnerable to Authentication Flow Hijack
CVSS Score
9.3
EPSS Score
0.1%
EPSS Percentile
18th
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.
| CWE | CWE-940 |
| Vendor | gematik |
| Product | app-authenticator |
| Published | Mar 27, 2026 |
| Last Updated | Apr 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
gematik / app-Authenticator
< 4.16.0