CVE-2026-40939

MEDIUM

DSF: Missing Session Timeout for OIDC Sessions

Title source: cna

Description

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.

References (4)

[X_Refsource_Confirm] https://github.com/datasharingframework/dsf/security/advisories/GHSA-gj7p-595x-qwf5

[X_Refsource_Misc] https://github.com/datasharingframework/dsf/commit/f4ecb002f7d12642f92da6b79371ed367d0140e7

View Writeup ZIP pw:eip

[X_Refsource_Misc] https://dsf.dev/operations/v2.1.0/bpe/oidc.html

[X_Refsource_Misc] https://dsf.dev/operations/v2.1.0/fhir/oidc.html

Scores

CVSS v4 6.8

EPSS 0.0002

EPSS Percentile 4.3%

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

Details

CWE

CWE-613

Status published

Products (4)

datasharingframework/dsf < 2.1.0

dev.dsf/dsf-bpe-server < 2.1.0

dev.dsf/dsf-common-jetty < 2.1.0

dev.dsf/dsf-fhir-server < 2.1.0

Published Apr 21, 2026

Tracked Since Apr 22, 2026