CVE-2026-40939 MEDIUM

CVE-2026-40939: DSF: Missing Session Timeout for OIDC Sessions

Vendor Datasharingframework
Product dsf
Weakness CWE-613 · Insufficient session expiration
Published April 21, 2026
Last update April 22, 2026
View on NVD All CVEs

CVSS base score

6.8/10
Attack vector Physical
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

The Data Sharing Framework (DSF) implements a distributed process engine based on the BPMN 2.0 and FHIR R4 standards. Prior to 2.1.0, OIDC-authenticated sessions had no configured maximum inactivity timeout. Sessions persisted indefinitely after login, even after the OIDC access token expired. This vulnerability is fixed in 2.1.0.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
April 22, 2026 Record updated