# CVE-2023-28465: HL7 FHIR Partial Path Zip Slip due to bypass of CVE-2023-24057 > Attackers can copy arbitrary files to directories via path traversal in HL7 FHIR Core Libraries package decompression. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 12 Dec 2023 - **Updated:** 27 May 2025 - **Also known as:** GHSA-9654-pr4f-gh6m ## What is CVE-2023-28465? CVE-2023-28465 is a high-severity path traversal vulnerability in n/a, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before 5.6.106 allows attackers to copy arbitrary files to certain directories via directory traversal, if an allowed directory name is a substring of the directory name chosen by the attacker. NOTE: this issue exists because of an incomplete fix for CVE-2023-24057. Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) ## Which versions are affected by CVE-2023-28465? 12 open source packages ship an affected version, including ca.uhn.hapi.fhir:org.hl7.fhir.convertors, ca.uhn.hapi.fhir:org.hl7.fhir.core and ca.uhn.hapi.fhir:org.hl7.fhir.r4b. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `ca.uhn.hapi.fhir:org.hl7.fhir.convertors` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.convertors` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.core` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.core` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.r4b` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.r4b` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.r5` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.r5` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.utilities` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.utilities` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.validation` | Maven | All versions | 5.6.106 | | `ca.uhn.hapi.fhir:org.hl7.fhir.validation` | Maven | All versions | 5.6.106 | Products: Hapifhir Hl7 Fhir Core. ## How do I fix CVE-2023-28465? Upgrade ca.uhn.hapi.fhir:org.hl7.fhir.convertors to 5.6.106 or later. ## Is CVE-2023-28465 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28465 exists. Public exploit code: - https://github.com/shoucheng3/hapifhir__org_hl7_fhir_core_CVE-2023-28465_5-6-1055 (github_poc): https://github.com/shoucheng3/hapifhir__org_hl7_fhir_core_CVE-2023-28465_5-6-1055 ## Other vulnerabilities in n/a - [CVE-2026-34361](https://insights.sbomify.com/CVE-2026-34361/): HAPI FHIR: Unauthenticated SSRF via /loadIG Chains with startsWith() Credential Leak for Authentication Token Theft (critical 9.3) - [CVE-2026-55471](https://insights.sbomify.com/CVE-2026-55471/): HAPI FHIR: XXE in XsltUtilities.saxonTransform via unhardened Saxon TransformerFactory (high 8.7) - [CVE-2023-24057](https://insights.sbomify.com/CVE-2023-24057/): MITM based Zip Slip in `ca.uhn.hapi.fhir:org.hl7.fhir.core` (high 8.1) - [CVE-2026-55470](https://insights.sbomify.com/CVE-2026-55470/): HAPI FHIR: DSTU2 FHIRPathEngine.matches() missing RegexTimeout protection allows ReDoS (high 7.5) - [CVE-2026-34359](https://insights.sbomify.com/CVE-2026-34359/): HAPI FHIR: Authentication Credential Leakage via Improper URL Prefix Matching on HTTP Redirect in HAPI FHIR Core (high 7.4) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2023-28465 and fix it if it is affected. What it is: CVE-2023-28465 is a high-severity path traversal vulnerability in n/a, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28465 exists. Affected packages and fixed versions: - ca.uhn.hapi.fhir:org.hl7.fhir.convertors (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.convertors (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.core (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.core (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.r4b (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.r4b (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.r5 (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.r5 (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.utilities (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.utilities (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.validation (Maven): affected all versions; fixed in 5.6.106 - ca.uhn.hapi.fhir:org.hl7.fhir.validation (Maven): affected all versions; fixed in 5.6.106 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2023-28465/ (Markdown: https://insights.sbomify.com/CVE-2023-28465/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28465 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28465 - OSV: https://osv.dev/vulnerability/CVE-2023-28465 --- From sbomify Insights: https://insights.sbomify.com/CVE-2023-28465/ Summaries are generated and may contain mistakes; the official description above is the record.