CVE-2026-33875 | BDVDB-2026-323457 Detail

gematikapp-Authenticator

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-940 Improper Verification of Source of a Communication Channel

References#

Exploit#

No public exploit known

History#

Version 12026-03-27Record published in the CVE List.
Version 22026-04-03Most recent update recorded in the CVE List.

Published

Published: 2026-03-27
Last modified: 2026-04-03

Vendor information

Vendor: gematik
Product: app-Authenticator

All gematik vulnerabilities

Score

9.3 Critical

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 19.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 4.16.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.3 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Changed
Confidentiality	High
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).