{"cve":"CVE-2026-40939","nvd":{"published":"2026-04-21T22:16:19.547","modified":"2026-10-26T21:10:00.170","status":"Deferred","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.","cvss_v4":{"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","score":6.8},"cvss_v3":null,"cwes":["CWE-613"],"references":["https://dsf.dev/operations/v2.1.0/bpe/oidc.html","https://dsf.dev/operations/v2.1.0/fhir/oidc.html","https://github.com/datasharingframework/dsf/commit/f4ecb002f7d12642f92da6b79371ed367d0140e7","https://github.com/datasharingframework/dsf/security/advisories/GHSA-gj7p-595x-qwf5"],"products":[],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-40939","score":0.00154,"percentile":0.04481,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-gj7p-595x-qwf5","url":"https://osv.dev/vulnerability/GHSA-gj7p-595x-qwf5","summary":"Data Sharing Framework is Missing Session Timeout for OIDC Sessions","modified":"2026-05-05T16:06:56.520145Z","packages":[{"ecosystem":"Maven","name":"dev.dsf:dsf-common-jetty","purl":"pkg:maven/dev.dsf/dsf-common-jetty","ranges":["all versions"],"fixed":[]},{"ecosystem":"Maven","name":"dev.dsf:dsf-fhir-server","purl":"pkg:maven/dev.dsf/dsf-fhir-server","ranges":["all versions"],"fixed":[]},{"ecosystem":"Maven","name":"dev.dsf:dsf-bpe-server","purl":"pkg:maven/dev.dsf/dsf-bpe-server","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}