GHSA-xr8x-pxm6-prjg — org.hl7.fhir.publisher
CRITICALGHSA-xr8x-pxm6-prjg is a critical-severity (CVSS 9.1) Path Traversal vulnerability in org.hl7.fhir.publisher:org.hl7.fhir.publisher. 1 public exploit reference exists, so weaponization risk is real. A fix is available for org.hl7.fhir.publisher:org.hl7.fhir.publisher — see the affected versions and patch details below.
MITM based Zip Slip in `org.hl7.fhir.publisher:org.hl7.fhir.publisher`
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-xr8x-pxm6-prjg.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-xr8x-pxm6-prjg plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,333 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.hl7.fhir.publisher:org.hl7.fhir.publisherReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Impact
MITM can enable Zip-Slip.
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.
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.
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.
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.hl7.fhir.publisher:org.hl7.fhir.publisher | all versions | 1.2.30org.hl7.fhir.publisher:org.hl7.fhir.publisher:1.2.30 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.hl7.fhir.publisher:org.hl7.fhir.publisher, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.hl7.fhir.publisher:org.hl7.fhir.publisher to 1.2.30 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xr8x-pxm6-prjg is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-xr8x-pxm6-prjg can be triaged on real exposure rather than presence alone.
Tailored to GHSA-xr8x-pxm6-prjg. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-xr8x-pxm6-prjg in your dependencies?
O3 Security finds GHSA-xr8x-pxm6-prjg across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.