How severe is CVE-2019-12741?

CVE-2019-12741 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-12741 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12741?

CVE-2019-12741 affects Fhir Hapi Fhir. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12741?

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

When was CVE-2019-12741 published?

CVE-2019-12741 was published on 2019-06-05 and last updated on 2026-06-17.

CVE-2019-12741

CVE-2019-12741 is a medium-severity vulnerability in Fhir Hapi Fhir with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fhir Hapi Fhir
Published: 2019-06-05
Last modified: 2026-06-17

Description

XSS exists in the HAPI FHIR testpage overlay module of the HAPI FHIR library before 3.8.0. The attack involves unsanitized HTTP parameters being output in a form page, allowing attackers to leak cookies and other sensitive information from ca/uhn/fhir/to/BaseController.java via a specially crafted URL. (This module is not generally used in production systems so the attack surface is expected to be low, but affected systems are recommended to upgrade immediately.)

Frequently asked questions

What is CVE-2019-12741?: XSS exists in the HAPI FHIR testpage overlay module of the HAPI FHIR library before 3.8.0. The attack involves unsanitized HTTP parameters being output in a form page, allowing attackers to leak cookies and other sensitive information from ca/uhn/fhir/to/BaseController.java via a specially crafted URL. (This module is not generally used in production systems so the attack surface is expected to be low, but affected systems are recommended to upgrade immediately.)
How severe is CVE-2019-12741?: CVE-2019-12741 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-12741 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12741?: CVE-2019-12741 affects Fhir Hapi Fhir. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12741?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-12741 published?: CVE-2019-12741 was published on 2019-06-05 and last updated on 2026-06-17.

References

Affected products (1)

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

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