Vulnerability 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, 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.
Related Weaknesses (CWE)
References
- https://github.com/datasharingframework/dsf/commit/31c2e974dfd4351756104ee8c53db
- https://github.com/datasharingframework/dsf/commit/d3ca59b4daccde16a006fedeccce2
- https://github.com/datasharingframework/dsf/security/advisories/GHSA-xmj9-7625-f
FAQ
What is CVE-2026-40942?
CVE-2026-40942 is a documented vulnerability. 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 c...
How severe is CVE-2026-40942?
CVSS scoring is not yet available for CVE-2026-40942. Check NVD for updates.
Is there a patch for CVE-2026-40942?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.