How severe is CVE-2021-32053?

CVE-2021-32053 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-32053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32053?

CVE-2021-32053 affects Fhir Hapi Fhir. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32053?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-32053 published?

CVE-2021-32053 was published on 2021-05-10 and last updated on 2026-06-17.

CVE-2021-32053

CVE-2021-32053 is a medium-severity vulnerability in Fhir Hapi Fhir with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Fhir Hapi Fhir
Published: 2021-05-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-32053?: 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.
How severe is CVE-2021-32053?: CVE-2021-32053 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-32053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32053?: CVE-2021-32053 affects Fhir Hapi Fhir. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32053 published?: CVE-2021-32053 was published on 2021-05-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fhir:hapi_fhir:*:*:*:*:*:*:*:*

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