{"cve":"CVE-2021-28938","nvd":{"published":"2021-04-13T06:15:12.420","modified":"2026-06-17T03:47:03.493","status":"Modified","description":"Siren Federate before 6.8.14-10.3.9, 6.9.x through 7.6.x before 7.6.2-20.2, 7.7.x through 7.9.x before 7.9.3-21.6, 7.10.x before 7.10.2-22.2, and 7.11.x before 7.11.2-23.0 can leak user information across thread contexts. This occurs in opportunistic circumstances when there is concurrent query execution by a low-privilege user and a high-privilege user. The former query might run with the latter query's privileges.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":[],"references":["https://docs.siren.io/siren-federate-user-guide/22/siren-federate/release-notes.html","https://docs.siren.io/siren-federate-user-guide/22/siren-federate/release-notes.html"],"products":["siren:federate"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-28938","score":0.00826,"percentile":0.57462,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}