GHSA-XR8X-PXM6-PRJG

GHSA-XR8X-PXM6-PRJG is a critical-severity security vulnerability in org.hl7.fhir.publisher:org.hl7.fhir.publisher (maven), affecting versions < 1.2.30. It is fixed in 1.2.30.

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Summary

MITM based Zip Slip in org.hl7.fhir.publisher:org.hl7.fhir.publisher

Vulnerability

Vulnerability 1: Publisher.java

There is no validation that the zip file being unpacked has entries that are not maliciously writing outside of the intended destination directory.

https://github.com/HL7/fhir-ig-publisher/blob/87313e92de6dd6cea816449e0edd225e054a7891/org.hl7.fhir.publisher.core/src/main/java/org/hl7/fhir/igtools/publisher/Publisher.java#L3598-L3610

Vulnerability 2: WebSourceProvider.java

There is a check for malicious zip entries here, but it is not covered by test cases and could potentially be reverted in future changes.

https://github.com/HL7/fhir-ig-publisher/blob/87313e92de6dd6cea816449e0edd225e054a7891/org.hl7.fhir.publisher.core/src/main/java/org/hl7/fhir/igtools/web/WebSourceProvider.java#L104-L112

Vulnerability 3: ZipFetcher.java

This retains the path for Zip files in FetchedFile entries, which could later be used to output malicious entries to another compressed file or file system.

https://github.com/HL7/fhir-ig-publisher/blob/87313e92de6dd6cea816449e0edd225e054a7891/org.hl7.fhir.publisher.core/src/main/java/org/hl7/fhir/igtools/publisher/ZipFetcher.java#L57-L106

Vulnerability 4: IGPack2NpmConvertor.java

The loadZip method retains the path for entries in the zip file, which could later be used to output malicious entries to another compressed file or file system.

https://github.com/HL7/fhir-ig-publisher/blob/87313e92de6dd6cea816449e0edd225e054a7891/org.hl7.fhir.publisher.core/src/main/java/org/hl7/fhir/igtools/publisher/IGPack2NpmConvertor.java#L442-L463

Impact

MITM can enable Zip-Slip.

GHSA-XR8X-PXM6-PRJG has a CVSS score of 9.1 (Critical). The vector is network-reachable, high privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.2.30); upgrading removes the vulnerable code path.

Affected versions

org.hl7.fhir.publisher:org.hl7.fhir.publisher (< 1.2.30)

Security releases

org.hl7.fhir.publisher:org.hl7.fhir.publisher → 1.2.30 (maven)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade org.hl7.fhir.publisher:org.hl7.fhir.publisher to 1.2.30 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

  1. What is GHSA-XR8X-PXM6-PRJG? GHSA-XR8X-PXM6-PRJG is a critical-severity security vulnerability in org.hl7.fhir.publisher:org.hl7.fhir.publisher (maven), affecting versions < 1.2.30. It is fixed in 1.2.30.
  2. How severe is GHSA-XR8X-PXM6-PRJG? GHSA-XR8X-PXM6-PRJG has a CVSS score of 9.1 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
  3. Which versions of org.hl7.fhir.publisher:org.hl7.fhir.publisher are affected by GHSA-XR8X-PXM6-PRJG? org.hl7.fhir.publisher:org.hl7.fhir.publisher (maven) versions < 1.2.30 is affected.
  4. Is there a fix for GHSA-XR8X-PXM6-PRJG? Yes. GHSA-XR8X-PXM6-PRJG is fixed in 1.2.30. Upgrade to this version or later.
  5. Is GHSA-XR8X-PXM6-PRJG exploitable, and should I be worried? Whether GHSA-XR8X-PXM6-PRJG is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
  6. What actually determines whether GHSA-XR8X-PXM6-PRJG is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
  7. How do I fix GHSA-XR8X-PXM6-PRJG? Upgrade org.hl7.fhir.publisher:org.hl7.fhir.publisher to 1.2.30 or later.

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