{"cve":"CVE-2021-32053","nvd":{"published":"2021-05-10T21:15:07.883","modified":"2026-06-17T03:52:43.660","status":"Modified","description":"JPA Server in HAPI FHIR before 5.4.0 allows a user to deny service (e.g., disable access to the database after the attack stops) via history requests. This occurs because of a SELECT COUNT statement that requires a full index scan, with an accompanying large amount of server resources if there are many simultaneous history requests.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-400"],"references":["https://github.com/hapifhir/hapi-fhir/issues/2641","https://github.com/hapifhir/hapi-fhir/pull/2642","https://hapifhir.io","https://github.com/hapifhir/hapi-fhir/issues/2641","https://github.com/hapifhir/hapi-fhir/pull/2642"],"products":["fhir:hapi_fhir"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-32053","score":0.01587,"percentile":0.75608,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-67f6-c8mx-4q2m","url":"https://osv.dev/vulnerability/GHSA-67f6-c8mx-4q2m","summary":"Uncontrolled Resource Consumption in JPA Server in HAPI FHIR","modified":"2023-11-08T04:05:52.696034Z","packages":[{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:hapi-fhir-jpaserver-base","purl":"pkg:maven/ca.uhn.hapi.fhir/hapi-fhir-jpaserver-base","ranges":["<5.4.0"],"fixed":["5.4.0"]}]}],"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."]}