CVE-2026-40942
Published:April 21, 2026
Updated:April 25, 2026
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, The OIDC JWKS and Metadata Document caches used an inverted time comparison (isBefore instead of isAfter), causing the cache to never return cached values. Every incoming request triggered a fresh HTTP fetch of the OIDC Metadata Document and JWKS keys from the OIDC provider. The OIDC token cache for the FHIR client connections used an inverted time comparison (isBefore instead of isAfter), causing the cache to never invalidate. Every incoming request returned the same OIDC token even if expired. This vulnerability is fixed in 2.1.0.
Affected Packages
https://github.com/datasharingframework/dsf.git (GITHUB):
Affected version(s) >=v1.0.0-M1 <2.1.0Fix Suggestion:
Update to version 2.1.0dev.dsf:dsf-bpe-process-api-v2 (JAVA):
Affected version(s) >=2.0.0-M2 <2.1.0Fix Suggestion:
Update to version 2.1.0dev.dsf:dsf-bpe-server (JAVA):
Affected version(s) >=1.0.0-M1 <2.1.0Fix Suggestion:
Update to version 2.1.0Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Always-Incorrect Control Flow Implementation
EPSS
Base Score:
0.04
