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GHSA-gj7p-595x-qwf5

MediumCVSS 6.8 / 10
Published Apr 15, 2026·Last modified May 5, 2026
Affected Components(0)

No affected components available

Description

Affected Components

DSF FHIR Server with enabled OIDC authentication. DSF BPE Server with enabled OIDC authentication.

Summary

OIDC-authenticated sessions had no configured maximum inactivity timeout. Sessions persisted indefinitely after login, even after the OIDC access token expired.

Impact

If a user logs in via OIDC and leaves their browser without explicitly logging out, the session remains valid indefinitely. Another person using the same browser can access the DSF UI with the previous user's permissions. This is a realistic threat in hospital environments with shared workstations.

Only affects OIDC browser sessions, not relevant for mTLS machine-to-machine communication.

Fix (commits f4ecb00, 7d25fea)

  • Added configurable session timeout via dev.dsf.server.auth.oidc.session.timeout (default: PT30M).
  • Enabled logoutWhenIdTokenIsExpired(true) in OpenID configuration to tie session lifetime to token lifetime.
  • Websocket sessions are now closed with VIOLATED_POLICY when credentials expire, prevents stale websocket connections from continuing to receive events after session timeout.
Risk Scores
Base Score
6.8

The vulnerability requires physical access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
3.7

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2026-40939
    Alias
  • EUVD-2026-24493
    Alias

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Medium severity
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